Audi 4000s fuel problem - wont start
01-01-2007, 09:47 PM
#1
Guest
Posts: n/a
Audi 4000s fuel problem - wont start
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
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
01-02-2007, 02:55 AM
#2
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
iamsiam@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.
01-02-2007, 02:55 AM
#3
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
iamsiam@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.
01-02-2007, 02:55 AM
#4
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
iamsiam@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.
01-02-2007, 02:55 AM
#5
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
iamsiam@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.
01-02-2007, 10:07 PM
#6
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
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" <tonyjnospam@nospamvisi.com> wrote in message
news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
> iamsiam@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.
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" <tonyjnospam@nospamvisi.com> wrote in message
news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
> iamsiam@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.
01-02-2007, 10:07 PM
#7
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
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" <tonyjnospam@nospamvisi.com> wrote in message
news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
> iamsiam@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.
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" <tonyjnospam@nospamvisi.com> wrote in message
news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
> iamsiam@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.
01-02-2007, 10:07 PM
#8
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
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" <tonyjnospam@nospamvisi.com> wrote in message
news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
> iamsiam@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.
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" <tonyjnospam@nospamvisi.com> wrote in message
news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
> iamsiam@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.
01-02-2007, 10:07 PM
#9
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
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" <tonyjnospam@nospamvisi.com> wrote in message
news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
> iamsiam@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.
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" <tonyjnospam@nospamvisi.com> wrote in message
news:12pk7fqk0hu0s2c@corp.supernews.com...
>
>
> iamsiam@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.
02-04-2007, 02:00 PM
#10
Guest
Posts: n/a
Re: Audi 4000s fuel problem - wont start
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 -
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 -
