Audi 80 splutters after cold start?
#11
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"Redwood" <not@home.net> wrote in message
news:5ianguF3omc0kU1@mid.individual.net...
> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>> Coolant Temperature Sensor for the Fuel Injection
>> Loose clamps on the Intake Manifold Boot.
>> Bad Fuel Injector Seals allowing air by them until they warm up and
>> expand.
>> Possibly a fuel pressure problem.
>> To name a few possibilities.
>>
>> Did it have this problem BEFORE the full service?
>
> Thanks Dave, yes according to the owner it has been a bit stuttery on
> initial start off for some time. I checked the ecu temp sensor which is
> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
> this should show battery voltage on ignition? I'm not sure how this
> operates, if it only comes on under a certain temp or should be on
> permanently.
Thermo time switch will only apply power to the cold start injector under
about 7 deg C.
Tim.
..
#12
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"Redwood" <not@home.net> wrote in message
news:5ianguF3omc0kU1@mid.individual.net...
> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>> Coolant Temperature Sensor for the Fuel Injection
>> Loose clamps on the Intake Manifold Boot.
>> Bad Fuel Injector Seals allowing air by them until they warm up and
>> expand.
>> Possibly a fuel pressure problem.
>> To name a few possibilities.
>>
>> Did it have this problem BEFORE the full service?
>
> Thanks Dave, yes according to the owner it has been a bit stuttery on
> initial start off for some time. I checked the ecu temp sensor which is
> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
> this should show battery voltage on ignition? I'm not sure how this
> operates, if it only comes on under a certain temp or should be on
> permanently.
Thermo time switch will only apply power to the cold start injector under
about 7 deg C.
Tim.
..
#13
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"Redwood" <not@home.net> wrote in message
news:5ianguF3omc0kU1@mid.individual.net...
> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>> Coolant Temperature Sensor for the Fuel Injection
>> Loose clamps on the Intake Manifold Boot.
>> Bad Fuel Injector Seals allowing air by them until they warm up and
>> expand.
>> Possibly a fuel pressure problem.
>> To name a few possibilities.
>>
>> Did it have this problem BEFORE the full service?
>
> Thanks Dave, yes according to the owner it has been a bit stuttery on
> initial start off for some time. I checked the ecu temp sensor which is
> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
> this should show battery voltage on ignition? I'm not sure how this
> operates, if it only comes on under a certain temp or should be on
> permanently.
Thermo time switch will only apply power to the cold start injector under
about 7 deg C.
Tim.
..
#14
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"Tim.." <the.farm.no@spam.btinternet.com> wrote in message
news:ZsydnaHOq61Ft13bRVnygAA@bt.com...
>
> "Redwood" <not@home.net> wrote in message
> news:5ianguF3omc0kU1@mid.individual.net...
>> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
>> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>>> Coolant Temperature Sensor for the Fuel Injection
>>> Loose clamps on the Intake Manifold Boot.
>>> Bad Fuel Injector Seals allowing air by them until they warm up and
>>> expand.
>>> Possibly a fuel pressure problem.
>>> To name a few possibilities.
>>>
>>> Did it have this problem BEFORE the full service?
>>
>> Thanks Dave, yes according to the owner it has been a bit stuttery on
>> initial start off for some time. I checked the ecu temp sensor which is
>> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
>> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
>> this should show battery voltage on ignition? I'm not sure how this
>> operates, if it only comes on under a certain temp or should be on
>> permanently.
>
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
I'm not sure this baby has a cold start injector, in fact it doesn't seem to
have much at all compared to engine pics I've seen of other Audi 80's. It's
the 2.0 SPI Mono-Motronic and it all seems very sparse underneath. I've now
had a look on Autodata and the only engine temperature related items I can
see on this model are the coolant temp sensor (one for ecu & one for gauge),
Intake air temp, manifold heater & O2 heater.
news:ZsydnaHOq61Ft13bRVnygAA@bt.com...
>
> "Redwood" <not@home.net> wrote in message
> news:5ianguF3omc0kU1@mid.individual.net...
>> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
>> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>>> Coolant Temperature Sensor for the Fuel Injection
>>> Loose clamps on the Intake Manifold Boot.
>>> Bad Fuel Injector Seals allowing air by them until they warm up and
>>> expand.
>>> Possibly a fuel pressure problem.
>>> To name a few possibilities.
>>>
>>> Did it have this problem BEFORE the full service?
>>
>> Thanks Dave, yes according to the owner it has been a bit stuttery on
>> initial start off for some time. I checked the ecu temp sensor which is
>> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
>> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
>> this should show battery voltage on ignition? I'm not sure how this
>> operates, if it only comes on under a certain temp or should be on
>> permanently.
>
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
I'm not sure this baby has a cold start injector, in fact it doesn't seem to
have much at all compared to engine pics I've seen of other Audi 80's. It's
the 2.0 SPI Mono-Motronic and it all seems very sparse underneath. I've now
had a look on Autodata and the only engine temperature related items I can
see on this model are the coolant temp sensor (one for ecu & one for gauge),
Intake air temp, manifold heater & O2 heater.
#15
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"Tim.." <the.farm.no@spam.btinternet.com> wrote in message
news:ZsydnaHOq61Ft13bRVnygAA@bt.com...
>
> "Redwood" <not@home.net> wrote in message
> news:5ianguF3omc0kU1@mid.individual.net...
>> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
>> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>>> Coolant Temperature Sensor for the Fuel Injection
>>> Loose clamps on the Intake Manifold Boot.
>>> Bad Fuel Injector Seals allowing air by them until they warm up and
>>> expand.
>>> Possibly a fuel pressure problem.
>>> To name a few possibilities.
>>>
>>> Did it have this problem BEFORE the full service?
>>
>> Thanks Dave, yes according to the owner it has been a bit stuttery on
>> initial start off for some time. I checked the ecu temp sensor which is
>> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
>> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
>> this should show battery voltage on ignition? I'm not sure how this
>> operates, if it only comes on under a certain temp or should be on
>> permanently.
>
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
I'm not sure this baby has a cold start injector, in fact it doesn't seem to
have much at all compared to engine pics I've seen of other Audi 80's. It's
the 2.0 SPI Mono-Motronic and it all seems very sparse underneath. I've now
had a look on Autodata and the only engine temperature related items I can
see on this model are the coolant temp sensor (one for ecu & one for gauge),
Intake air temp, manifold heater & O2 heater.
news:ZsydnaHOq61Ft13bRVnygAA@bt.com...
>
> "Redwood" <not@home.net> wrote in message
> news:5ianguF3omc0kU1@mid.individual.net...
>> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
>> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>>> Coolant Temperature Sensor for the Fuel Injection
>>> Loose clamps on the Intake Manifold Boot.
>>> Bad Fuel Injector Seals allowing air by them until they warm up and
>>> expand.
>>> Possibly a fuel pressure problem.
>>> To name a few possibilities.
>>>
>>> Did it have this problem BEFORE the full service?
>>
>> Thanks Dave, yes according to the owner it has been a bit stuttery on
>> initial start off for some time. I checked the ecu temp sensor which is
>> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
>> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
>> this should show battery voltage on ignition? I'm not sure how this
>> operates, if it only comes on under a certain temp or should be on
>> permanently.
>
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
I'm not sure this baby has a cold start injector, in fact it doesn't seem to
have much at all compared to engine pics I've seen of other Audi 80's. It's
the 2.0 SPI Mono-Motronic and it all seems very sparse underneath. I've now
had a look on Autodata and the only engine temperature related items I can
see on this model are the coolant temp sensor (one for ecu & one for gauge),
Intake air temp, manifold heater & O2 heater.
#16
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"Tim.." <the.farm.no@spam.btinternet.com> wrote in message
news:ZsydnaHOq61Ft13bRVnygAA@bt.com...
>
> "Redwood" <not@home.net> wrote in message
> news:5ianguF3omc0kU1@mid.individual.net...
>> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
>> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>>> Coolant Temperature Sensor for the Fuel Injection
>>> Loose clamps on the Intake Manifold Boot.
>>> Bad Fuel Injector Seals allowing air by them until they warm up and
>>> expand.
>>> Possibly a fuel pressure problem.
>>> To name a few possibilities.
>>>
>>> Did it have this problem BEFORE the full service?
>>
>> Thanks Dave, yes according to the owner it has been a bit stuttery on
>> initial start off for some time. I checked the ecu temp sensor which is
>> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
>> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
>> this should show battery voltage on ignition? I'm not sure how this
>> operates, if it only comes on under a certain temp or should be on
>> permanently.
>
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
I'm not sure this baby has a cold start injector, in fact it doesn't seem to
have much at all compared to engine pics I've seen of other Audi 80's. It's
the 2.0 SPI Mono-Motronic and it all seems very sparse underneath. I've now
had a look on Autodata and the only engine temperature related items I can
see on this model are the coolant temp sensor (one for ecu & one for gauge),
Intake air temp, manifold heater & O2 heater.
news:ZsydnaHOq61Ft13bRVnygAA@bt.com...
>
> "Redwood" <not@home.net> wrote in message
> news:5ianguF3omc0kU1@mid.individual.net...
>> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
>> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>>> Coolant Temperature Sensor for the Fuel Injection
>>> Loose clamps on the Intake Manifold Boot.
>>> Bad Fuel Injector Seals allowing air by them until they warm up and
>>> expand.
>>> Possibly a fuel pressure problem.
>>> To name a few possibilities.
>>>
>>> Did it have this problem BEFORE the full service?
>>
>> Thanks Dave, yes according to the owner it has been a bit stuttery on
>> initial start off for some time. I checked the ecu temp sensor which is
>> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
>> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
>> this should show battery voltage on ignition? I'm not sure how this
>> operates, if it only comes on under a certain temp or should be on
>> permanently.
>
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
I'm not sure this baby has a cold start injector, in fact it doesn't seem to
have much at all compared to engine pics I've seen of other Audi 80's. It's
the 2.0 SPI Mono-Motronic and it all seems very sparse underneath. I've now
had a look on Autodata and the only engine temperature related items I can
see on this model are the coolant temp sensor (one for ecu & one for gauge),
Intake air temp, manifold heater & O2 heater.
#17
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"Tim.." <the.farm.no@spam.btinternet.com> wrote in message
news:ZsydnaHOq61Ft13bRVnygAA@bt.com...
>
> "Redwood" <not@home.net> wrote in message
> news:5ianguF3omc0kU1@mid.individual.net...
>> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
>> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>>> Coolant Temperature Sensor for the Fuel Injection
>>> Loose clamps on the Intake Manifold Boot.
>>> Bad Fuel Injector Seals allowing air by them until they warm up and
>>> expand.
>>> Possibly a fuel pressure problem.
>>> To name a few possibilities.
>>>
>>> Did it have this problem BEFORE the full service?
>>
>> Thanks Dave, yes according to the owner it has been a bit stuttery on
>> initial start off for some time. I checked the ecu temp sensor which is
>> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
>> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
>> this should show battery voltage on ignition? I'm not sure how this
>> operates, if it only comes on under a certain temp or should be on
>> permanently.
>
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
I'm not sure this baby has a cold start injector, in fact it doesn't seem to
have much at all compared to engine pics I've seen of other Audi 80's. It's
the 2.0 SPI Mono-Motronic and it all seems very sparse underneath. I've now
had a look on Autodata and the only engine temperature related items I can
see on this model are the coolant temp sensor (one for ecu & one for gauge),
Intake air temp, manifold heater & O2 heater.
news:ZsydnaHOq61Ft13bRVnygAA@bt.com...
>
> "Redwood" <not@home.net> wrote in message
> news:5ianguF3omc0kU1@mid.individual.net...
>> "dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
>> news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
>>> Coolant Temperature Sensor for the Fuel Injection
>>> Loose clamps on the Intake Manifold Boot.
>>> Bad Fuel Injector Seals allowing air by them until they warm up and
>>> expand.
>>> Possibly a fuel pressure problem.
>>> To name a few possibilities.
>>>
>>> Did it have this problem BEFORE the full service?
>>
>> Thanks Dave, yes according to the owner it has been a bit stuttery on
>> initial start off for some time. I checked the ecu temp sensor which is
>> giving normal readings (300ohm hot & 3000 cold) But I did notice there is
>> no voltage at the Inlet manifold heater terminal. Can anyone confirm if
>> this should show battery voltage on ignition? I'm not sure how this
>> operates, if it only comes on under a certain temp or should be on
>> permanently.
>
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
I'm not sure this baby has a cold start injector, in fact it doesn't seem to
have much at all compared to engine pics I've seen of other Audi 80's. It's
the 2.0 SPI Mono-Motronic and it all seems very sparse underneath. I've now
had a look on Autodata and the only engine temperature related items I can
see on this model are the coolant temp sensor (one for ecu & one for gauge),
Intake air temp, manifold heater & O2 heater.
#18
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
On 13 Aug, 10:51, "Tim.." <the.farm...@spam.btinternet.com> wrote:
> "Redwood" <n...@home.net> wrote in message
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
>
> Tim.
> .
My 5th injector is controlled both by a thermo switch and by the ECU
on cold start for warm-up enrichment. But since the OP said he doesnt
have a 5th inj. I guess it makes no odds.
> "Redwood" <n...@home.net> wrote in message
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
>
> Tim.
> .
My 5th injector is controlled both by a thermo switch and by the ECU
on cold start for warm-up enrichment. But since the OP said he doesnt
have a 5th inj. I guess it makes no odds.
#19
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
On 13 Aug, 10:51, "Tim.." <the.farm...@spam.btinternet.com> wrote:
> "Redwood" <n...@home.net> wrote in message
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
>
> Tim.
> .
My 5th injector is controlled both by a thermo switch and by the ECU
on cold start for warm-up enrichment. But since the OP said he doesnt
have a 5th inj. I guess it makes no odds.
> "Redwood" <n...@home.net> wrote in message
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
>
> Tim.
> .
My 5th injector is controlled both by a thermo switch and by the ECU
on cold start for warm-up enrichment. But since the OP said he doesnt
have a 5th inj. I guess it makes no odds.
#20
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
On 13 Aug, 10:51, "Tim.." <the.farm...@spam.btinternet.com> wrote:
> "Redwood" <n...@home.net> wrote in message
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
>
> Tim.
> .
My 5th injector is controlled both by a thermo switch and by the ECU
on cold start for warm-up enrichment. But since the OP said he doesnt
have a 5th inj. I guess it makes no odds.
> "Redwood" <n...@home.net> wrote in message
> Thermo time switch will only apply power to the cold start injector under
> about 7 deg C.
>
> Tim.
> .
My 5th injector is controlled both by a thermo switch and by the ECU
on cold start for warm-up enrichment. But since the OP said he doesnt
have a 5th inj. I guess it makes no odds.