iamsiam@aol.com

Hello Audi 4000 fuel help still needed

Been busy at work, not much time to work on the Audi until last week.

Still having problems getting this car to run, was wondering if there
are any other ideas out there?

I still can not get the fuel injector unit to shoot fuel into the
injectors. It still fires fuel to the cold start valve, enough juice
to run 3-5 seconds.

I checked all fuses, put new ones in the blank spaces.

I checked the fuel injector air-door, it opened fine.

I replaced the entire fuel injector unit with a used one I had from a
parts lot I bought.

I changed the fuel regulator as well, the one on the injector unit, I
believe this is the "Differential fuel pressure sensor (just in
front of fuel distributor." ,that you mentioned
As far as the "Failing engine temp senso" " the MFTS ", is this the
same as the temperature sending switch? . Could this really keep the
fuel injector unit from firing? Can I bypass this to test it?
There is no massive air leak at the large intake manifold
The ignition switch is fine, it is new, it is getting power to the
fuel pump and other systems

Any help would be appreciated!!

Richy Jackson
On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> Like TonyJ said..............it might be a Failing engine coolant temp
> sensor (CTS)
>
> Or a fuse in the fuse box. It is positioned to look like a spare fuse and
> many times I will find it missing on a vehicle that is not running right if
> running at all. 8^o
> Examine all of the fuses for any broken ones and stick a fuse in all sockets
> with terminals.
>
> Or it could be the ground wire for the fuel pressure regulator is broken and
> it should be located at the cold start valve.
>
> Or it could be a defective fuel distributor.
>
> Or it could be a massive air leak at the large intake manifold boots. Maybe
> a light engine backfire into the intake system along with the gas pedal
> being depressed might have caused a hose/pipe to pop off creating a large
> vacuum leak.
>
> Or it could be the ign switch not allowing power to the systems when it is
> in the ON position. Telltale signs would be those red idiot lights not
> being ON with the ign ON or while cranking over the engine.
>
> good luck and let us know what happens!
> later,
> dave
> AKA vwdoc1
>
> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>
> news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
>
>
>
> > iams...@aol.com wrote:
> >> I was wondering of anyone could help me with a problem that suddenly
> >> developed with my AUDI,
>
> >> The car is a 1987 Audi 4000s 1.8L
> >> Here is the deal, the car will start for second or two, but will not
> >> rev up, then it dies.
>
> >> Fuel pump and filters are new.
>
> >> Strong fuel pressure to the Fuel injector unit.
>
> >> The injector unit is sending fuel to the cold start valve, but not to
> >> the cylinders, thus the car will start but will not continue to run.
> >> The pressure to the cold start valve is strong, but not a drop to the
> >> fuel injectors.
>
> >> I replaced the external fuel regulator with a spare one and checked for
> >> vacuum leaks etc.
>
> >> I am not sure where to look from here, internally on the Fuel Injection
> >> Unit, or to a relay or other control.
>
> >> As I stated the problem happened overnight.
>
> >> Any help would be appreciated.
> >> I have not used a internet group before, do I hope I am doing this
> >> right...........
>
> >> Thanks,
>
> >> Richy Jackson
>
> > If the air plate just above the air filter is stuck the injectors will not
> > fire. This can be due to vacuum leaks (you checked but check again) or
> > deposits on the rod above the plate.
>
> > Open air cleaner and reach up into the intake just above. The plate should
> > move but with a little pressure. Don't force it.
>
> > Other ideas:
> > Differential fuel pressure sensor (just in front of fuel distributor.
>
> > Blown engine management fuse (in the side of the relay box.
>
> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
> > located by the upper radiator hose inlet to the engine.- Hide quoted text -
>
> - Show quoted text -

iamsiam@aol.com

Hello Audi 4000 fuel help still needed

Been busy at work, not much time to work on the Audi until last week.

Still having problems getting this car to run, was wondering if there
are any other ideas out there?

I still can not get the fuel injector unit to shoot fuel into the
injectors. It still fires fuel to the cold start valve, enough juice
to run 3-5 seconds.

I checked all fuses, put new ones in the blank spaces.

I checked the fuel injector air-door, it opened fine.

I replaced the entire fuel injector unit with a used one I had from a
parts lot I bought.

I changed the fuel regulator as well, the one on the injector unit, I
believe this is the "Differential fuel pressure sensor (just in
front of fuel distributor." ,that you mentioned
As far as the "Failing engine temp senso" " the MFTS ", is this the
same as the temperature sending switch? . Could this really keep the
fuel injector unit from firing? Can I bypass this to test it?
There is no massive air leak at the large intake manifold
The ignition switch is fine, it is new, it is getting power to the
fuel pump and other systems

Any help would be appreciated!!

Richy Jackson
On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> Like TonyJ said..............it might be a Failing engine coolant temp
> sensor (CTS)
>
> Or a fuse in the fuse box. It is positioned to look like a spare fuse and
> many times I will find it missing on a vehicle that is not running right if
> running at all. 8^o
> Examine all of the fuses for any broken ones and stick a fuse in all sockets
> with terminals.
>
> Or it could be the ground wire for the fuel pressure regulator is broken and
> it should be located at the cold start valve.
>
> Or it could be a defective fuel distributor.
>
> Or it could be a massive air leak at the large intake manifold boots. Maybe
> a light engine backfire into the intake system along with the gas pedal
> being depressed might have caused a hose/pipe to pop off creating a large
> vacuum leak.
>
> Or it could be the ign switch not allowing power to the systems when it is
> in the ON position. Telltale signs would be those red idiot lights not
> being ON with the ign ON or while cranking over the engine.
>
> good luck and let us know what happens!
> later,
> dave
> AKA vwdoc1
>
> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>
> news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
>
>
>
> > iams...@aol.com wrote:
> >> I was wondering of anyone could help me with a problem that suddenly
> >> developed with my AUDI,
>
> >> The car is a 1987 Audi 4000s 1.8L
> >> Here is the deal, the car will start for second or two, but will not
> >> rev up, then it dies.
>
> >> Fuel pump and filters are new.
>
> >> Strong fuel pressure to the Fuel injector unit.
>
> >> The injector unit is sending fuel to the cold start valve, but not to
> >> the cylinders, thus the car will start but will not continue to run.
> >> The pressure to the cold start valve is strong, but not a drop to the
> >> fuel injectors.
>
> >> I replaced the external fuel regulator with a spare one and checked for
> >> vacuum leaks etc.
>
> >> I am not sure where to look from here, internally on the Fuel Injection
> >> Unit, or to a relay or other control.
>
> >> As I stated the problem happened overnight.
>
> >> Any help would be appreciated.
> >> I have not used a internet group before, do I hope I am doing this
> >> right...........
>
> >> Thanks,
>
> >> Richy Jackson
>
> > If the air plate just above the air filter is stuck the injectors will not
> > fire. This can be due to vacuum leaks (you checked but check again) or
> > deposits on the rod above the plate.
>
> > Open air cleaner and reach up into the intake just above. The plate should
> > move but with a little pressure. Don't force it.
>
> > Other ideas:
> > Differential fuel pressure sensor (just in front of fuel distributor.
>
> > Blown engine management fuse (in the side of the relay box.
>
> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
> > located by the upper radiator hose inlet to the engine.- Hide quoted text -
>
> - Show quoted text -

iamsiam@aol.com

Hello Audi 4000 fuel help still needed

Been busy at work, not much time to work on the Audi until last week.

Still having problems getting this car to run, was wondering if there
are any other ideas out there?

I still can not get the fuel injector unit to shoot fuel into the
injectors. It still fires fuel to the cold start valve, enough juice
to run 3-5 seconds.

I checked all fuses, put new ones in the blank spaces.

I checked the fuel injector air-door, it opened fine.

I replaced the entire fuel injector unit with a used one I had from a
parts lot I bought.

I changed the fuel regulator as well, the one on the injector unit, I
believe this is the "Differential fuel pressure sensor (just in
front of fuel distributor." ,that you mentioned
As far as the "Failing engine temp senso" " the MFTS ", is this the
same as the temperature sending switch? . Could this really keep the
fuel injector unit from firing? Can I bypass this to test it?
There is no massive air leak at the large intake manifold
The ignition switch is fine, it is new, it is getting power to the
fuel pump and other systems

Any help would be appreciated!!

Richy Jackson
On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> Like TonyJ said..............it might be a Failing engine coolant temp
> sensor (CTS)
>
> Or a fuse in the fuse box. It is positioned to look like a spare fuse and
> many times I will find it missing on a vehicle that is not running right if
> running at all. 8^o
> Examine all of the fuses for any broken ones and stick a fuse in all sockets
> with terminals.
>
> Or it could be the ground wire for the fuel pressure regulator is broken and
> it should be located at the cold start valve.
>
> Or it could be a defective fuel distributor.
>
> Or it could be a massive air leak at the large intake manifold boots. Maybe
> a light engine backfire into the intake system along with the gas pedal
> being depressed might have caused a hose/pipe to pop off creating a large
> vacuum leak.
>
> Or it could be the ign switch not allowing power to the systems when it is
> in the ON position. Telltale signs would be those red idiot lights not
> being ON with the ign ON or while cranking over the engine.
>
> good luck and let us know what happens!
> later,
> dave
> AKA vwdoc1
>
> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>
> news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
>
>
>
> > iams...@aol.com wrote:
> >> I was wondering of anyone could help me with a problem that suddenly
> >> developed with my AUDI,
>
> >> The car is a 1987 Audi 4000s 1.8L
> >> Here is the deal, the car will start for second or two, but will not
> >> rev up, then it dies.
>
> >> Fuel pump and filters are new.
>
> >> Strong fuel pressure to the Fuel injector unit.
>
> >> The injector unit is sending fuel to the cold start valve, but not to
> >> the cylinders, thus the car will start but will not continue to run.
> >> The pressure to the cold start valve is strong, but not a drop to the
> >> fuel injectors.
>
> >> I replaced the external fuel regulator with a spare one and checked for
> >> vacuum leaks etc.
>
> >> I am not sure where to look from here, internally on the Fuel Injection
> >> Unit, or to a relay or other control.
>
> >> As I stated the problem happened overnight.
>
> >> Any help would be appreciated.
> >> I have not used a internet group before, do I hope I am doing this
> >> right...........
>
> >> Thanks,
>
> >> Richy Jackson
>
> > If the air plate just above the air filter is stuck the injectors will not
> > fire. This can be due to vacuum leaks (you checked but check again) or
> > deposits on the rod above the plate.
>
> > Open air cleaner and reach up into the intake just above. The plate should
> > move but with a little pressure. Don't force it.
>
> > Other ideas:
> > Differential fuel pressure sensor (just in front of fuel distributor.
>
> > Blown engine management fuse (in the side of the relay box.
>
> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
> > located by the upper radiator hose inlet to the engine.- Hide quoted text -
>
> - Show quoted text -

dave AKA vwdoc1

Do you have a repair manual? Even a Haynes (cough cough) could help some.

Remove intake boot off of fuel distributor so you can manually lift up the
plate.
Remove injector(s) out of the cylinder head and aim into a container so you
can examine spray pattern.
Remove fuel pump and jump correct wires to run fuel pump continually.
Turn ign on but do not start car.

Pull up on fuel distributor plate to check fuel injector spray pattern.
Tell us what happens?
If it sprays out that is good and you might just need to adjust something or
change a sensor.
If nothing sprays out then I suspect either a bad fuel distributor, bad Fuel
Pressure Regulator, bad wiring, missing fuse, clogged injectors, no fuel
pressure or ????

The ground wire for the FPR usually breaks at the cold start valve.

No the temperature sensor for the gauge is different than the one for the
fuel injection.

later,
dave
(One out of many daves)

<iamsiam@aol.com> wrote in message
news:1170619241.886746.160980@a34g2000cwb.googlegr oups.com...
> Hello Audi 4000 fuel help still needed
>
> Been busy at work, not much time to work on the Audi until last week.
>
> Still having problems getting this car to run, was wondering if there
> are any other ideas out there?
>
> I still can not get the fuel injector unit to shoot fuel into the
> injectors. It still fires fuel to the cold start valve, enough juice
> to run 3-5 seconds.
>
> I checked all fuses, put new ones in the blank spaces.
>
> I checked the fuel injector air-door, it opened fine.
>
> I replaced the entire fuel injector unit with a used one I had from a
> parts lot I bought.
>
> I changed the fuel regulator as well, the one on the injector unit, I
> believe this is the "Differential fuel pressure sensor (just in
> front of fuel distributor." ,that you mentioned
> As far as the "Failing engine temp senso" " the MFTS ", is this the
> same as the temperature sending switch? . Could this really keep the
> fuel injector unit from firing? Can I bypass this to test it?
> There is no massive air leak at the large intake manifold
> The ignition switch is fine, it is new, it is getting power to the
> fuel pump and other systems
>
> Any help would be appreciated!!
>
> Richy Jackson
> On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
>> Like TonyJ said..............it might be a Failing engine coolant temp
>> sensor (CTS)
>>
>> Or a fuse in the fuse box. It is positioned to look like a spare fuse
>> and
>> many times I will find it missing on a vehicle that is not running right
>> if
>> running at all. 8^o
>> Examine all of the fuses for any broken ones and stick a fuse in all
>> sockets
>> with terminals.
>>
>> Or it could be the ground wire for the fuel pressure regulator is broken
>> and
>> it should be located at the cold start valve.
>>
>> Or it could be a defective fuel distributor.
>>
>> Or it could be a massive air leak at the large intake manifold boots.
>> Maybe
>> a light engine backfire into the intake system along with the gas pedal
>> being depressed might have caused a hose/pipe to pop off creating a large
>> vacuum leak.
>>
>> Or it could be the ign switch not allowing power to the systems when it
>> is
>> in the ON position. Telltale signs would be those red idiot lights not
>> being ON with the ign ON or while cranking over the engine.
>>
>> good luck and let us know what happens!
>> later,
>> dave
>> AKA vwdoc1
>>
>> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>>
>> news:12pk7fqk0hu0s2c@corp.supernews.com...
>>
>>
>>
>>
>>
>> > iams...@aol.com wrote:
>> >> I was wondering of anyone could help me with a problem that suddenly
>> >> developed with my AUDI,
>>
>> >> The car is a 1987 Audi 4000s 1.8L
>> >> Here is the deal, the car will start for second or two, but will not
>> >> rev up, then it dies.
>>
>> >> Fuel pump and filters are new.
>>
>> >> Strong fuel pressure to the Fuel injector unit.
>>
>> >> The injector unit is sending fuel to the cold start valve, but not to
>> >> the cylinders, thus the car will start but will not continue to run.
>> >> The pressure to the cold start valve is strong, but not a drop to the
>> >> fuel injectors.
>>
>> >> I replaced the external fuel regulator with a spare one and checked
>> >> for
>> >> vacuum leaks etc.
>>
>> >> I am not sure where to look from here, internally on the Fuel
>> >> Injection
>> >> Unit, or to a relay or other control.
>>
>> >> As I stated the problem happened overnight.
>>
>> >> Any help would be appreciated.
>> >> I have not used a internet group before, do I hope I am doing this
>> >> right...........
>>
>> >> Thanks,
>>
>> >> Richy Jackson
>>
>> > If the air plate just above the air filter is stuck the injectors will
>> > not
>> > fire. This can be due to vacuum leaks (you checked but check again)
>> > or
>> > deposits on the rod above the plate.
>>
>> > Open air cleaner and reach up into the intake just above. The plate
>> > should
>> > move but with a little pressure. Don't force it.
>>
>> > Other ideas:
>> > Differential fuel pressure sensor (just in front of fuel distributor.
>>
>> > Blown engine management fuse (in the side of the relay box.
>>
>> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
>> > located by the upper radiator hose inlet to the engine.- Hide quoted
>> > text -
>>
>> - Show quoted text -
>
>

dave AKA vwdoc1

Do you have a repair manual? Even a Haynes (cough cough) could help some.

Remove intake boot off of fuel distributor so you can manually lift up the
plate.
Remove injector(s) out of the cylinder head and aim into a container so you
can examine spray pattern.
Remove fuel pump and jump correct wires to run fuel pump continually.
Turn ign on but do not start car.

Pull up on fuel distributor plate to check fuel injector spray pattern.
Tell us what happens?
If it sprays out that is good and you might just need to adjust something or
change a sensor.
If nothing sprays out then I suspect either a bad fuel distributor, bad Fuel
Pressure Regulator, bad wiring, missing fuse, clogged injectors, no fuel
pressure or ????

The ground wire for the FPR usually breaks at the cold start valve.

No the temperature sensor for the gauge is different than the one for the
fuel injection.

later,
dave
(One out of many daves)

<iamsiam@aol.com> wrote in message
news:1170619241.886746.160980@a34g2000cwb.googlegr oups.com...
> Hello Audi 4000 fuel help still needed
>
> Been busy at work, not much time to work on the Audi until last week.
>
> Still having problems getting this car to run, was wondering if there
> are any other ideas out there?
>
> I still can not get the fuel injector unit to shoot fuel into the
> injectors. It still fires fuel to the cold start valve, enough juice
> to run 3-5 seconds.
>
> I checked all fuses, put new ones in the blank spaces.
>
> I checked the fuel injector air-door, it opened fine.
>
> I replaced the entire fuel injector unit with a used one I had from a
> parts lot I bought.
>
> I changed the fuel regulator as well, the one on the injector unit, I
> believe this is the "Differential fuel pressure sensor (just in
> front of fuel distributor." ,that you mentioned
> As far as the "Failing engine temp senso" " the MFTS ", is this the
> same as the temperature sending switch? . Could this really keep the
> fuel injector unit from firing? Can I bypass this to test it?
> There is no massive air leak at the large intake manifold
> The ignition switch is fine, it is new, it is getting power to the
> fuel pump and other systems
>
> Any help would be appreciated!!
>
> Richy Jackson
> On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
>> Like TonyJ said..............it might be a Failing engine coolant temp
>> sensor (CTS)
>>
>> Or a fuse in the fuse box. It is positioned to look like a spare fuse
>> and
>> many times I will find it missing on a vehicle that is not running right
>> if
>> running at all. 8^o
>> Examine all of the fuses for any broken ones and stick a fuse in all
>> sockets
>> with terminals.
>>
>> Or it could be the ground wire for the fuel pressure regulator is broken
>> and
>> it should be located at the cold start valve.
>>
>> Or it could be a defective fuel distributor.
>>
>> Or it could be a massive air leak at the large intake manifold boots.
>> Maybe
>> a light engine backfire into the intake system along with the gas pedal
>> being depressed might have caused a hose/pipe to pop off creating a large
>> vacuum leak.
>>
>> Or it could be the ign switch not allowing power to the systems when it
>> is
>> in the ON position. Telltale signs would be those red idiot lights not
>> being ON with the ign ON or while cranking over the engine.
>>
>> good luck and let us know what happens!
>> later,
>> dave
>> AKA vwdoc1
>>
>> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>>
>> news:12pk7fqk0hu0s2c@corp.supernews.com...
>>
>>
>>
>>
>>
>> > iams...@aol.com wrote:
>> >> I was wondering of anyone could help me with a problem that suddenly
>> >> developed with my AUDI,
>>
>> >> The car is a 1987 Audi 4000s 1.8L
>> >> Here is the deal, the car will start for second or two, but will not
>> >> rev up, then it dies.
>>
>> >> Fuel pump and filters are new.
>>
>> >> Strong fuel pressure to the Fuel injector unit.
>>
>> >> The injector unit is sending fuel to the cold start valve, but not to
>> >> the cylinders, thus the car will start but will not continue to run.
>> >> The pressure to the cold start valve is strong, but not a drop to the
>> >> fuel injectors.
>>
>> >> I replaced the external fuel regulator with a spare one and checked
>> >> for
>> >> vacuum leaks etc.
>>
>> >> I am not sure where to look from here, internally on the Fuel
>> >> Injection
>> >> Unit, or to a relay or other control.
>>
>> >> As I stated the problem happened overnight.
>>
>> >> Any help would be appreciated.
>> >> I have not used a internet group before, do I hope I am doing this
>> >> right...........
>>
>> >> Thanks,
>>
>> >> Richy Jackson
>>
>> > If the air plate just above the air filter is stuck the injectors will
>> > not
>> > fire. This can be due to vacuum leaks (you checked but check again)
>> > or
>> > deposits on the rod above the plate.
>>
>> > Open air cleaner and reach up into the intake just above. The plate
>> > should
>> > move but with a little pressure. Don't force it.
>>
>> > Other ideas:
>> > Differential fuel pressure sensor (just in front of fuel distributor.
>>
>> > Blown engine management fuse (in the side of the relay box.
>>
>> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
>> > located by the upper radiator hose inlet to the engine.- Hide quoted
>> > text -
>>
>> - Show quoted text -
>
>

dave AKA vwdoc1

Do you have a repair manual? Even a Haynes (cough cough) could help some.

Remove intake boot off of fuel distributor so you can manually lift up the
plate.
Remove injector(s) out of the cylinder head and aim into a container so you
can examine spray pattern.
Remove fuel pump and jump correct wires to run fuel pump continually.
Turn ign on but do not start car.

Pull up on fuel distributor plate to check fuel injector spray pattern.
Tell us what happens?
If it sprays out that is good and you might just need to adjust something or
change a sensor.
If nothing sprays out then I suspect either a bad fuel distributor, bad Fuel
Pressure Regulator, bad wiring, missing fuse, clogged injectors, no fuel
pressure or ????

The ground wire for the FPR usually breaks at the cold start valve.

No the temperature sensor for the gauge is different than the one for the
fuel injection.

later,
dave
(One out of many daves)

<iamsiam@aol.com> wrote in message
news:1170619241.886746.160980@a34g2000cwb.googlegr oups.com...
> Hello Audi 4000 fuel help still needed
>
> Been busy at work, not much time to work on the Audi until last week.
>
> Still having problems getting this car to run, was wondering if there
> are any other ideas out there?
>
> I still can not get the fuel injector unit to shoot fuel into the
> injectors. It still fires fuel to the cold start valve, enough juice
> to run 3-5 seconds.
>
> I checked all fuses, put new ones in the blank spaces.
>
> I checked the fuel injector air-door, it opened fine.
>
> I replaced the entire fuel injector unit with a used one I had from a
> parts lot I bought.
>
> I changed the fuel regulator as well, the one on the injector unit, I
> believe this is the "Differential fuel pressure sensor (just in
> front of fuel distributor." ,that you mentioned
> As far as the "Failing engine temp senso" " the MFTS ", is this the
> same as the temperature sending switch? . Could this really keep the
> fuel injector unit from firing? Can I bypass this to test it?
> There is no massive air leak at the large intake manifold
> The ignition switch is fine, it is new, it is getting power to the
> fuel pump and other systems
>
> Any help would be appreciated!!
>
> Richy Jackson
> On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
>> Like TonyJ said..............it might be a Failing engine coolant temp
>> sensor (CTS)
>>
>> Or a fuse in the fuse box. It is positioned to look like a spare fuse
>> and
>> many times I will find it missing on a vehicle that is not running right
>> if
>> running at all. 8^o
>> Examine all of the fuses for any broken ones and stick a fuse in all
>> sockets
>> with terminals.
>>
>> Or it could be the ground wire for the fuel pressure regulator is broken
>> and
>> it should be located at the cold start valve.
>>
>> Or it could be a defective fuel distributor.
>>
>> Or it could be a massive air leak at the large intake manifold boots.
>> Maybe
>> a light engine backfire into the intake system along with the gas pedal
>> being depressed might have caused a hose/pipe to pop off creating a large
>> vacuum leak.
>>
>> Or it could be the ign switch not allowing power to the systems when it
>> is
>> in the ON position. Telltale signs would be those red idiot lights not
>> being ON with the ign ON or while cranking over the engine.
>>
>> good luck and let us know what happens!
>> later,
>> dave
>> AKA vwdoc1
>>
>> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>>
>> news:12pk7fqk0hu0s2c@corp.supernews.com...
>>
>>
>>
>>
>>
>> > iams...@aol.com wrote:
>> >> I was wondering of anyone could help me with a problem that suddenly
>> >> developed with my AUDI,
>>
>> >> The car is a 1987 Audi 4000s 1.8L
>> >> Here is the deal, the car will start for second or two, but will not
>> >> rev up, then it dies.
>>
>> >> Fuel pump and filters are new.
>>
>> >> Strong fuel pressure to the Fuel injector unit.
>>
>> >> The injector unit is sending fuel to the cold start valve, but not to
>> >> the cylinders, thus the car will start but will not continue to run.
>> >> The pressure to the cold start valve is strong, but not a drop to the
>> >> fuel injectors.
>>
>> >> I replaced the external fuel regulator with a spare one and checked
>> >> for
>> >> vacuum leaks etc.
>>
>> >> I am not sure where to look from here, internally on the Fuel
>> >> Injection
>> >> Unit, or to a relay or other control.
>>
>> >> As I stated the problem happened overnight.
>>
>> >> Any help would be appreciated.
>> >> I have not used a internet group before, do I hope I am doing this
>> >> right...........
>>
>> >> Thanks,
>>
>> >> Richy Jackson
>>
>> > If the air plate just above the air filter is stuck the injectors will
>> > not
>> > fire. This can be due to vacuum leaks (you checked but check again)
>> > or
>> > deposits on the rod above the plate.
>>
>> > Open air cleaner and reach up into the intake just above. The plate
>> > should
>> > move but with a little pressure. Don't force it.
>>
>> > Other ideas:
>> > Differential fuel pressure sensor (just in front of fuel distributor.
>>
>> > Blown engine management fuse (in the side of the relay box.
>>
>> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
>> > located by the upper radiator hose inlet to the engine.- Hide quoted
>> > text -
>>
>> - Show quoted text -
>
>

dave AKA vwdoc1

Do you have a repair manual? Even a Haynes (cough cough) could help some.

Remove intake boot off of fuel distributor so you can manually lift up the
plate.
Remove injector(s) out of the cylinder head and aim into a container so you
can examine spray pattern.
Remove fuel pump and jump correct wires to run fuel pump continually.
Turn ign on but do not start car.

Pull up on fuel distributor plate to check fuel injector spray pattern.
Tell us what happens?
If it sprays out that is good and you might just need to adjust something or
change a sensor.
If nothing sprays out then I suspect either a bad fuel distributor, bad Fuel
Pressure Regulator, bad wiring, missing fuse, clogged injectors, no fuel
pressure or ????

The ground wire for the FPR usually breaks at the cold start valve.

No the temperature sensor for the gauge is different than the one for the
fuel injection.

later,
dave
(One out of many daves)

<iamsiam@aol.com> wrote in message
news:1170619241.886746.160980@a34g2000cwb.googlegr oups.com...
> Hello Audi 4000 fuel help still needed
>
> Been busy at work, not much time to work on the Audi until last week.
>
> Still having problems getting this car to run, was wondering if there
> are any other ideas out there?
>
> I still can not get the fuel injector unit to shoot fuel into the
> injectors. It still fires fuel to the cold start valve, enough juice
> to run 3-5 seconds.
>
> I checked all fuses, put new ones in the blank spaces.
>
> I checked the fuel injector air-door, it opened fine.
>
> I replaced the entire fuel injector unit with a used one I had from a
> parts lot I bought.
>
> I changed the fuel regulator as well, the one on the injector unit, I
> believe this is the "Differential fuel pressure sensor (just in
> front of fuel distributor." ,that you mentioned
> As far as the "Failing engine temp senso" " the MFTS ", is this the
> same as the temperature sending switch? . Could this really keep the
> fuel injector unit from firing? Can I bypass this to test it?
> There is no massive air leak at the large intake manifold
> The ignition switch is fine, it is new, it is getting power to the
> fuel pump and other systems
>
> Any help would be appreciated!!
>
> Richy Jackson
> On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
>> Like TonyJ said..............it might be a Failing engine coolant temp
>> sensor (CTS)
>>
>> Or a fuse in the fuse box. It is positioned to look like a spare fuse
>> and
>> many times I will find it missing on a vehicle that is not running right
>> if
>> running at all. 8^o
>> Examine all of the fuses for any broken ones and stick a fuse in all
>> sockets
>> with terminals.
>>
>> Or it could be the ground wire for the fuel pressure regulator is broken
>> and
>> it should be located at the cold start valve.
>>
>> Or it could be a defective fuel distributor.
>>
>> Or it could be a massive air leak at the large intake manifold boots.
>> Maybe
>> a light engine backfire into the intake system along with the gas pedal
>> being depressed might have caused a hose/pipe to pop off creating a large
>> vacuum leak.
>>
>> Or it could be the ign switch not allowing power to the systems when it
>> is
>> in the ON position. Telltale signs would be those red idiot lights not
>> being ON with the ign ON or while cranking over the engine.
>>
>> good luck and let us know what happens!
>> later,
>> dave
>> AKA vwdoc1
>>
>> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>>
>> news:12pk7fqk0hu0s2c@corp.supernews.com...
>>
>>
>>
>>
>>
>> > iams...@aol.com wrote:
>> >> I was wondering of anyone could help me with a problem that suddenly
>> >> developed with my AUDI,
>>
>> >> The car is a 1987 Audi 4000s 1.8L
>> >> Here is the deal, the car will start for second or two, but will not
>> >> rev up, then it dies.
>>
>> >> Fuel pump and filters are new.
>>
>> >> Strong fuel pressure to the Fuel injector unit.
>>
>> >> The injector unit is sending fuel to the cold start valve, but not to
>> >> the cylinders, thus the car will start but will not continue to run.
>> >> The pressure to the cold start valve is strong, but not a drop to the
>> >> fuel injectors.
>>
>> >> I replaced the external fuel regulator with a spare one and checked
>> >> for
>> >> vacuum leaks etc.
>>
>> >> I am not sure where to look from here, internally on the Fuel
>> >> Injection
>> >> Unit, or to a relay or other control.
>>
>> >> As I stated the problem happened overnight.
>>
>> >> Any help would be appreciated.
>> >> I have not used a internet group before, do I hope I am doing this
>> >> right...........
>>
>> >> Thanks,
>>
>> >> Richy Jackson
>>
>> > If the air plate just above the air filter is stuck the injectors will
>> > not
>> > fire. This can be due to vacuum leaks (you checked but check again)
>> > or
>> > deposits on the rod above the plate.
>>
>> > Open air cleaner and reach up into the intake just above. The plate
>> > should
>> > move but with a little pressure. Don't force it.
>>
>> > Other ideas:
>> > Differential fuel pressure sensor (just in front of fuel distributor.
>>
>> > Blown engine management fuse (in the side of the relay box.
>>
>> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
>> > located by the upper radiator hose inlet to the engine.- Hide quoted
>> > text -
>>
>> - Show quoted text -
>
>

iamsiam@aol.com

On Feb 4, 6:13 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> Do you have a repair manual? Even a Haynes (cough cough) could help some.
>
> Remove intake boot off of fuel distributor so you can manually lift up the
> plate.
> Remove injector(s) out of the cylinder head and aim into a container so you
> can examine spray pattern.
> Remove fuel pump and jump correct wires to run fuel pump continually.
> Turn ign on but do not start car.
>
> Pull up on fuel distributor plate to check fuel injector spray pattern.
> Tell us what happens?
> If it sprays out that is good and you might just need to adjust something or
> change a sensor.
> If nothing sprays out then I suspect either a bad fuel distributor, bad Fuel
> Pressure Regulator, bad wiring, missing fuse, clogged injectors, no fuel
> pressure or ????
>
> The ground wire for the FPR usually breaks at the cold start valve.
>
> No the temperature sensor for the gauge is different than the one for the
> fuel injection.
>
> later,
> dave
> (One out of many daves)
>
> <iams...@aol.com> wrote in message
>
> news:1170619241.886746.160980@a34g2000cwb.googlegr oups.com...
>
>
>
> > Hello Audi 4000 fuel help still needed
>
> > Been busy at work, not much time to work on the Audi until last week.
>
> > Still having problems getting this car to run, was wondering if there
> > are any other ideas out there?
>
> > I still can not get the fuel injector unit to shoot fuel into the
> > injectors. It still fires fuel to the cold start valve, enough juice
> > to run 3-5 seconds.
>
> > I checked all fuses, put new ones in the blank spaces.
>
> > I checked the fuel injector air-door, it opened fine.
>
> > I replaced the entire fuel injector unit with a used one I had from a
> > parts lot I bought.
>
> > I changed the fuel regulator as well, the one on the injector unit, I
> > believe this is the "Differential fuel pressure sensor (just in
> > front of fuel distributor." ,that you mentioned
> > As far as the "Failing engine temp senso" " the MFTS ", is this the
> > same as the temperature sending switch? . Could this really keep the
> > fuel injector unit from firing? Can I bypass this to test it?
> > There is no massive air leak at the large intake manifold
> > The ignition switch is fine, it is new, it is getting power to the
> > fuel pump and other systems
>
> > Any help would be appreciated!!
>
> > Richy Jackson
> > On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> >> Like TonyJ said..............it might be a Failing engine coolant temp
> >> sensor (CTS)
>
> >> Or a fuse in the fuse box. It is positioned to look like a spare fuse
> >> and
> >> many times I will find it missing on a vehicle that is not running right
> >> if
> >> running at all. 8^o
> >> Examine all of the fuses for any broken ones and stick a fuse in all
> >> sockets
> >> with terminals.
>
> >> Or it could be the ground wire for the fuel pressure regulator is broken
> >> and
> >> it should be located at the cold start valve.
>
> >> Or it could be a defective fuel distributor.
>
> >> Or it could be a massive air leak at the large intake manifold boots.
> >> Maybe
> >> a light engine backfire into the intake system along with the gas pedal
> >> being depressed might have caused a hose/pipe to pop off creating a large
> >> vacuum leak.
>
> >> Or it could be the ign switch not allowing power to the systems when it
> >> is
> >> in the ON position. Telltale signs would be those red idiot lights not
> >> being ON with the ign ON or while cranking over the engine.
>
> >> good luck and let us know what happens!
> >> later,
> >> dave
> >> AKA vwdoc1
>
> >> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>
> >>news:12pk7fqk0hu0s2c@corp.supernews.com...
>
> >> > iams...@aol.com wrote:
> >> >> I was wondering of anyone could help me with a problem that suddenly
> >> >> developed with my AUDI,
>
> >> >> The car is a 1987 Audi 4000s 1.8L
> >> >> Here is the deal, the car will start for second or two, but will not
> >> >> rev up, then it dies.
>
> >> >> Fuel pump and filters are new.
>
> >> >> Strong fuel pressure to the Fuel injector unit.
>
> >> >> The injector unit is sending fuel to the cold start valve, but not to
> >> >> the cylinders, thus the car will start but will not continue to run.
> >> >> The pressure to the cold start valve is strong, but not a drop to the
> >> >> fuel injectors.
>
> >> >> I replaced the external fuel regulator with a spare one and checked
> >> >> for
> >> >> vacuum leaks etc.
>
> >> >> I am not sure where to look from here, internally on the Fuel
> >> >> Injection
> >> >> Unit, or to a relay or other control.
>
> >> >> As I stated the problem happened overnight.
>
> >> >> Any help would be appreciated.
> >> >> I have not used a internet group before, do I hope I am doing this
> >> >> right...........
>
> >> >> Thanks,
>
> >> >> Richy Jackson
>
> >> > If the air plate just above the air filter is stuck the injectors will
> >> > not
> >> > fire. This can be due to vacuum leaks (you checked but check again)
> >> > or
> >> > deposits on the rod above the plate.
>
> >> > Open air cleaner and reach up into the intake just above. The plate
> >> > should
> >> > move but with a little pressure. Don't force it.
>
> >> > Other ideas:
> >> > Differential fuel pressure sensor (just in front of fuel distributor.
>
> >> > Blown engine management fuse (in the side of the relay box.
>
> >> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
> >> > located by the upper radiator hose inlet to the engine.- Hide quoted
> >> > text -
>
> >> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -


Hey Dave,

Thanks for the reply,

Yup, I have a good old Haynes manual; read it a couple times...!! I will
get a shop manual..

I did take off the hoses to the fuel injectors and cranked the engine,
nothing comes out, except for the line to the Cold Star Valve that
gives a nice spray to the intake...

I tested this with both my original, and a replacement fuel injector
unit, in both cases, plenty of fuel to cold start valve, nothing to
fuel injectors. I already pulled the plate up as you suggest. still
nothing from the fuel injector hoses

Replaced both fuel regulators, car has new fuel pump and filters,
plenty of fuel pressure to injector unit...

The ground to the cold start valve is fine

As I have tried a replacement injector unit, it does the same thing, I
am thinking it I electrical, fuses are good.

I read the voltage of the fuel regulator that is on the fuel
distributor unit or, it shows 8 v, there is an electrical connection
on the other side.

Something is keeping the Fuel distributor unit from shooting fuel to
the injectors, any other thoughts?

Tell me again about the temp sensor for the fuel distributor, where is
it located & would it stop the fuel injector unit from firing?

This car ran fine until a couple months ago, I changed brake lines &
complete exhaust & then it stopped running...

Any help would be cool..


Richy Jackson

iamsiam@aol.com

On Feb 4, 6:13 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> Do you have a repair manual? Even a Haynes (cough cough) could help some.
>
> Remove intake boot off of fuel distributor so you can manually lift up the
> plate.
> Remove injector(s) out of the cylinder head and aim into a container so you
> can examine spray pattern.
> Remove fuel pump and jump correct wires to run fuel pump continually.
> Turn ign on but do not start car.
>
> Pull up on fuel distributor plate to check fuel injector spray pattern.
> Tell us what happens?
> If it sprays out that is good and you might just need to adjust something or
> change a sensor.
> If nothing sprays out then I suspect either a bad fuel distributor, bad Fuel
> Pressure Regulator, bad wiring, missing fuse, clogged injectors, no fuel
> pressure or ????
>
> The ground wire for the FPR usually breaks at the cold start valve.
>
> No the temperature sensor for the gauge is different than the one for the
> fuel injection.
>
> later,
> dave
> (One out of many daves)
>
> <iams...@aol.com> wrote in message
>
> news:1170619241.886746.160980@a34g2000cwb.googlegr oups.com...
>
>
>
> > Hello Audi 4000 fuel help still needed
>
> > Been busy at work, not much time to work on the Audi until last week.
>
> > Still having problems getting this car to run, was wondering if there
> > are any other ideas out there?
>
> > I still can not get the fuel injector unit to shoot fuel into the
> > injectors. It still fires fuel to the cold start valve, enough juice
> > to run 3-5 seconds.
>
> > I checked all fuses, put new ones in the blank spaces.
>
> > I checked the fuel injector air-door, it opened fine.
>
> > I replaced the entire fuel injector unit with a used one I had from a
> > parts lot I bought.
>
> > I changed the fuel regulator as well, the one on the injector unit, I
> > believe this is the "Differential fuel pressure sensor (just in
> > front of fuel distributor." ,that you mentioned
> > As far as the "Failing engine temp senso" " the MFTS ", is this the
> > same as the temperature sending switch? . Could this really keep the
> > fuel injector unit from firing? Can I bypass this to test it?
> > There is no massive air leak at the large intake manifold
> > The ignition switch is fine, it is new, it is getting power to the
> > fuel pump and other systems
>
> > Any help would be appreciated!!
>
> > Richy Jackson
> > On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> >> Like TonyJ said..............it might be a Failing engine coolant temp
> >> sensor (CTS)
>
> >> Or a fuse in the fuse box. It is positioned to look like a spare fuse
> >> and
> >> many times I will find it missing on a vehicle that is not running right
> >> if
> >> running at all. 8^o
> >> Examine all of the fuses for any broken ones and stick a fuse in all
> >> sockets
> >> with terminals.
>
> >> Or it could be the ground wire for the fuel pressure regulator is broken
> >> and
> >> it should be located at the cold start valve.
>
> >> Or it could be a defective fuel distributor.
>
> >> Or it could be a massive air leak at the large intake manifold boots.
> >> Maybe
> >> a light engine backfire into the intake system along with the gas pedal
> >> being depressed might have caused a hose/pipe to pop off creating a large
> >> vacuum leak.
>
> >> Or it could be the ign switch not allowing power to the systems when it
> >> is
> >> in the ON position. Telltale signs would be those red idiot lights not
> >> being ON with the ign ON or while cranking over the engine.
>
> >> good luck and let us know what happens!
> >> later,
> >> dave
> >> AKA vwdoc1
>
> >> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>
> >>news:12pk7fqk0hu0s2c@corp.supernews.com...
>
> >> > iams...@aol.com wrote:
> >> >> I was wondering of anyone could help me with a problem that suddenly
> >> >> developed with my AUDI,
>
> >> >> The car is a 1987 Audi 4000s 1.8L
> >> >> Here is the deal, the car will start for second or two, but will not
> >> >> rev up, then it dies.
>
> >> >> Fuel pump and filters are new.
>
> >> >> Strong fuel pressure to the Fuel injector unit.
>
> >> >> The injector unit is sending fuel to the cold start valve, but not to
> >> >> the cylinders, thus the car will start but will not continue to run.
> >> >> The pressure to the cold start valve is strong, but not a drop to the
> >> >> fuel injectors.
>
> >> >> I replaced the external fuel regulator with a spare one and checked
> >> >> for
> >> >> vacuum leaks etc.
>
> >> >> I am not sure where to look from here, internally on the Fuel
> >> >> Injection
> >> >> Unit, or to a relay or other control.
>
> >> >> As I stated the problem happened overnight.
>
> >> >> Any help would be appreciated.
> >> >> I have not used a internet group before, do I hope I am doing this
> >> >> right...........
>
> >> >> Thanks,
>
> >> >> Richy Jackson
>
> >> > If the air plate just above the air filter is stuck the injectors will
> >> > not
> >> > fire. This can be due to vacuum leaks (you checked but check again)
> >> > or
> >> > deposits on the rod above the plate.
>
> >> > Open air cleaner and reach up into the intake just above. The plate
> >> > should
> >> > move but with a little pressure. Don't force it.
>
> >> > Other ideas:
> >> > Differential fuel pressure sensor (just in front of fuel distributor.
>
> >> > Blown engine management fuse (in the side of the relay box.
>
> >> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
> >> > located by the upper radiator hose inlet to the engine.- Hide quoted
> >> > text -
>
> >> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -


Hey Dave,

Thanks for the reply,

Yup, I have a good old Haynes manual; read it a couple times...!! I will
get a shop manual..

I did take off the hoses to the fuel injectors and cranked the engine,
nothing comes out, except for the line to the Cold Star Valve that
gives a nice spray to the intake...

I tested this with both my original, and a replacement fuel injector
unit, in both cases, plenty of fuel to cold start valve, nothing to
fuel injectors. I already pulled the plate up as you suggest. still
nothing from the fuel injector hoses

Replaced both fuel regulators, car has new fuel pump and filters,
plenty of fuel pressure to injector unit...

The ground to the cold start valve is fine

As I have tried a replacement injector unit, it does the same thing, I
am thinking it I electrical, fuses are good.

I read the voltage of the fuel regulator that is on the fuel
distributor unit or, it shows 8 v, there is an electrical connection
on the other side.

Something is keeping the Fuel distributor unit from shooting fuel to
the injectors, any other thoughts?

Tell me again about the temp sensor for the fuel distributor, where is
it located & would it stop the fuel injector unit from firing?

This car ran fine until a couple months ago, I changed brake lines &
complete exhaust & then it stopped running...

Any help would be cool..


Richy Jackson

iamsiam@aol.com

On Feb 4, 6:13 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> Do you have a repair manual? Even a Haynes (cough cough) could help some.
>
> Remove intake boot off of fuel distributor so you can manually lift up the
> plate.
> Remove injector(s) out of the cylinder head and aim into a container so you
> can examine spray pattern.
> Remove fuel pump and jump correct wires to run fuel pump continually.
> Turn ign on but do not start car.
>
> Pull up on fuel distributor plate to check fuel injector spray pattern.
> Tell us what happens?
> If it sprays out that is good and you might just need to adjust something or
> change a sensor.
> If nothing sprays out then I suspect either a bad fuel distributor, bad Fuel
> Pressure Regulator, bad wiring, missing fuse, clogged injectors, no fuel
> pressure or ????
>
> The ground wire for the FPR usually breaks at the cold start valve.
>
> No the temperature sensor for the gauge is different than the one for the
> fuel injection.
>
> later,
> dave
> (One out of many daves)
>
> <iams...@aol.com> wrote in message
>
> news:1170619241.886746.160980@a34g2000cwb.googlegr oups.com...
>
>
>
> > Hello Audi 4000 fuel help still needed
>
> > Been busy at work, not much time to work on the Audi until last week.
>
> > Still having problems getting this car to run, was wondering if there
> > are any other ideas out there?
>
> > I still can not get the fuel injector unit to shoot fuel into the
> > injectors. It still fires fuel to the cold start valve, enough juice
> > to run 3-5 seconds.
>
> > I checked all fuses, put new ones in the blank spaces.
>
> > I checked the fuel injector air-door, it opened fine.
>
> > I replaced the entire fuel injector unit with a used one I had from a
> > parts lot I bought.
>
> > I changed the fuel regulator as well, the one on the injector unit, I
> > believe this is the "Differential fuel pressure sensor (just in
> > front of fuel distributor." ,that you mentioned
> > As far as the "Failing engine temp senso" " the MFTS ", is this the
> > same as the temperature sending switch? . Could this really keep the
> > fuel injector unit from firing? Can I bypass this to test it?
> > There is no massive air leak at the large intake manifold
> > The ignition switch is fine, it is new, it is getting power to the
> > fuel pump and other systems
>
> > Any help would be appreciated!!
>
> > Richy Jackson
> > On Jan 2, 11:07 pm, "dave AKA vwdoc1" <vwd...@hotmail.com> wrote:
> >> Like TonyJ said..............it might be a Failing engine coolant temp
> >> sensor (CTS)
>
> >> Or a fuse in the fuse box. It is positioned to look like a spare fuse
> >> and
> >> many times I will find it missing on a vehicle that is not running right
> >> if
> >> running at all. 8^o
> >> Examine all of the fuses for any broken ones and stick a fuse in all
> >> sockets
> >> with terminals.
>
> >> Or it could be the ground wire for the fuel pressure regulator is broken
> >> and
> >> it should be located at the cold start valve.
>
> >> Or it could be a defective fuel distributor.
>
> >> Or it could be a massive air leak at the large intake manifold boots.
> >> Maybe
> >> a light engine backfire into the intake system along with the gas pedal
> >> being depressed might have caused a hose/pipe to pop off creating a large
> >> vacuum leak.
>
> >> Or it could be the ign switch not allowing power to the systems when it
> >> is
> >> in the ON position. Telltale signs would be those red idiot lights not
> >> being ON with the ign ON or while cranking over the engine.
>
> >> good luck and let us know what happens!
> >> later,
> >> dave
> >> AKA vwdoc1
>
> >> "TonyJ" <tonyjnos...@nospamvisi.com> wrote in message
>
> >>news:12pk7fqk0hu0s2c@corp.supernews.com...
>
> >> > iams...@aol.com wrote:
> >> >> I was wondering of anyone could help me with a problem that suddenly
> >> >> developed with my AUDI,
>
> >> >> The car is a 1987 Audi 4000s 1.8L
> >> >> Here is the deal, the car will start for second or two, but will not
> >> >> rev up, then it dies.
>
> >> >> Fuel pump and filters are new.
>
> >> >> Strong fuel pressure to the Fuel injector unit.
>
> >> >> The injector unit is sending fuel to the cold start valve, but not to
> >> >> the cylinders, thus the car will start but will not continue to run.
> >> >> The pressure to the cold start valve is strong, but not a drop to the
> >> >> fuel injectors.
>
> >> >> I replaced the external fuel regulator with a spare one and checked
> >> >> for
> >> >> vacuum leaks etc.
>
> >> >> I am not sure where to look from here, internally on the Fuel
> >> >> Injection
> >> >> Unit, or to a relay or other control.
>
> >> >> As I stated the problem happened overnight.
>
> >> >> Any help would be appreciated.
> >> >> I have not used a internet group before, do I hope I am doing this
> >> >> right...........
>
> >> >> Thanks,
>
> >> >> Richy Jackson
>
> >> > If the air plate just above the air filter is stuck the injectors will
> >> > not
> >> > fire. This can be due to vacuum leaks (you checked but check again)
> >> > or
> >> > deposits on the rod above the plate.
>
> >> > Open air cleaner and reach up into the intake just above. The plate
> >> > should
> >> > move but with a little pressure. Don't force it.
>
> >> > Other ideas:
> >> > Differential fuel pressure sensor (just in front of fuel distributor.
>
> >> > Blown engine management fuse (in the side of the relay box.
>
> >> > Failing engine temp sensor. In the T44s it is called the MFTS and it is
> >> > located by the upper radiator hose inlet to the engine.- Hide quoted
> >> > text -
>
> >> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -


Hey Dave,

Thanks for the reply,

Yup, I have a good old Haynes manual; read it a couple times...!! I will
get a shop manual..

I did take off the hoses to the fuel injectors and cranked the engine,
nothing comes out, except for the line to the Cold Star Valve that
gives a nice spray to the intake...

I tested this with both my original, and a replacement fuel injector
unit, in both cases, plenty of fuel to cold start valve, nothing to
fuel injectors. I already pulled the plate up as you suggest. still
nothing from the fuel injector hoses

Replaced both fuel regulators, car has new fuel pump and filters,
plenty of fuel pressure to injector unit...

The ground to the cold start valve is fine

As I have tried a replacement injector unit, it does the same thing, I
am thinking it I electrical, fuses are good.

I read the voltage of the fuel regulator that is on the fuel
distributor unit or, it shows 8 v, there is an electrical connection
on the other side.

Something is keeping the Fuel distributor unit from shooting fuel to
the injectors, any other thoughts?

Tell me again about the temp sensor for the fuel distributor, where is
it located & would it stop the fuel injector unit from firing?

This car ran fine until a couple months ago, I changed brake lines &
complete exhaust & then it stopped running...

Any help would be cool..


Richy Jackson