Audi 80 splutters after cold start?
#1
Guest
Posts: n/a
Audi 80 splutters after cold start?
1993 Audi 80 8valve single point i (ABT engine 90hp)
The car has had a full service and generally drives very well but when
starting from cold after been left for several hours (or overnight) it
starts and idles ok but the first few moments of driving is very spluttery
and kangaroos. Feels like fuel starvation for the first few hundred feet
but then clears and drives ok for the rest of the day. I've checked for any
vacuum leaks or lose connections but everything seems ok. I'm not too
familiar with the Audi so wondering if any of you experts had any idea what
to check?
The car has had a full service and generally drives very well but when
starting from cold after been left for several hours (or overnight) it
starts and idles ok but the first few moments of driving is very spluttery
and kangaroos. Feels like fuel starvation for the first few hundred feet
but then clears and drives ok for the rest of the day. I've checked for any
vacuum leaks or lose connections but everything seems ok. I'm not too
familiar with the Audi so wondering if any of you experts had any idea what
to check?
#2
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
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?
--
later,
dave
(One out of many daves)
"Redwood" <not@home.net> wrote in message
news:5i8nolF3npthqU1@mid.individual.net...
> 1993 Audi 80 8valve single point i (ABT engine 90hp)
>
> The car has had a full service and generally drives very well but when
> starting from cold after been left for several hours (or overnight) it
> starts and idles ok but the first few moments of driving is very spluttery
> and kangaroos. Feels like fuel starvation for the first few hundred feet
> but then clears and drives ok for the rest of the day. I've checked for
> any vacuum leaks or lose connections but everything seems ok. I'm not too
> familiar with the Audi so wondering if any of you experts had any idea
> what to check?
>
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?
--
later,
dave
(One out of many daves)
"Redwood" <not@home.net> wrote in message
news:5i8nolF3npthqU1@mid.individual.net...
> 1993 Audi 80 8valve single point i (ABT engine 90hp)
>
> The car has had a full service and generally drives very well but when
> starting from cold after been left for several hours (or overnight) it
> starts and idles ok but the first few moments of driving is very spluttery
> and kangaroos. Feels like fuel starvation for the first few hundred feet
> but then clears and drives ok for the rest of the day. I've checked for
> any vacuum leaks or lose connections but everything seems ok. I'm not too
> familiar with the Audi so wondering if any of you experts had any idea
> what to check?
>
#3
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
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?
--
later,
dave
(One out of many daves)
"Redwood" <not@home.net> wrote in message
news:5i8nolF3npthqU1@mid.individual.net...
> 1993 Audi 80 8valve single point i (ABT engine 90hp)
>
> The car has had a full service and generally drives very well but when
> starting from cold after been left for several hours (or overnight) it
> starts and idles ok but the first few moments of driving is very spluttery
> and kangaroos. Feels like fuel starvation for the first few hundred feet
> but then clears and drives ok for the rest of the day. I've checked for
> any vacuum leaks or lose connections but everything seems ok. I'm not too
> familiar with the Audi so wondering if any of you experts had any idea
> what to check?
>
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?
--
later,
dave
(One out of many daves)
"Redwood" <not@home.net> wrote in message
news:5i8nolF3npthqU1@mid.individual.net...
> 1993 Audi 80 8valve single point i (ABT engine 90hp)
>
> The car has had a full service and generally drives very well but when
> starting from cold after been left for several hours (or overnight) it
> starts and idles ok but the first few moments of driving is very spluttery
> and kangaroos. Feels like fuel starvation for the first few hundred feet
> but then clears and drives ok for the rest of the day. I've checked for
> any vacuum leaks or lose connections but everything seems ok. I'm not too
> familiar with the Audi so wondering if any of you experts had any idea
> what to check?
>
#4
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
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?
--
later,
dave
(One out of many daves)
"Redwood" <not@home.net> wrote in message
news:5i8nolF3npthqU1@mid.individual.net...
> 1993 Audi 80 8valve single point i (ABT engine 90hp)
>
> The car has had a full service and generally drives very well but when
> starting from cold after been left for several hours (or overnight) it
> starts and idles ok but the first few moments of driving is very spluttery
> and kangaroos. Feels like fuel starvation for the first few hundred feet
> but then clears and drives ok for the rest of the day. I've checked for
> any vacuum leaks or lose connections but everything seems ok. I'm not too
> familiar with the Audi so wondering if any of you experts had any idea
> what to check?
>
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?
--
later,
dave
(One out of many daves)
"Redwood" <not@home.net> wrote in message
news:5i8nolF3npthqU1@mid.individual.net...
> 1993 Audi 80 8valve single point i (ABT engine 90hp)
>
> The car has had a full service and generally drives very well but when
> starting from cold after been left for several hours (or overnight) it
> starts and idles ok but the first few moments of driving is very spluttery
> and kangaroos. Feels like fuel starvation for the first few hundred feet
> but then clears and drives ok for the rest of the day. I've checked for
> any vacuum leaks or lose connections but everything seems ok. I'm not too
> familiar with the Audi so wondering if any of you experts had any idea
> what to check?
>
#5
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
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?
--
later,
dave
(One out of many daves)
"Redwood" <not@home.net> wrote in message
news:5i8nolF3npthqU1@mid.individual.net...
> 1993 Audi 80 8valve single point i (ABT engine 90hp)
>
> The car has had a full service and generally drives very well but when
> starting from cold after been left for several hours (or overnight) it
> starts and idles ok but the first few moments of driving is very spluttery
> and kangaroos. Feels like fuel starvation for the first few hundred feet
> but then clears and drives ok for the rest of the day. I've checked for
> any vacuum leaks or lose connections but everything seems ok. I'm not too
> familiar with the Audi so wondering if any of you experts had any idea
> what to check?
>
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?
--
later,
dave
(One out of many daves)
"Redwood" <not@home.net> wrote in message
news:5i8nolF3npthqU1@mid.individual.net...
> 1993 Audi 80 8valve single point i (ABT engine 90hp)
>
> The car has had a full service and generally drives very well but when
> starting from cold after been left for several hours (or overnight) it
> starts and idles ok but the first few moments of driving is very spluttery
> and kangaroos. Feels like fuel starvation for the first few hundred feet
> but then clears and drives ok for the rest of the day. I've checked for
> any vacuum leaks or lose connections but everything seems ok. I'm not too
> familiar with the Audi so wondering if any of you experts had any idea
> what to check?
>
#6
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
> Coolant Temperature Sensor for the Fuel Injection
> Loose clamps on the Intake Manifold Boot.
> Bad Fuel Injector Seals allowing air by them until they warm up and
> expand.
> Possibly a fuel pressure problem.
> To name a few possibilities.
>
> Did it have this problem BEFORE the full service?
Thanks Dave, yes according to the owner it has been a bit stuttery on
initial start off for some time. I checked the ecu temp sensor which is
giving normal readings (300ohm hot & 3000 cold) But I did notice there is no
voltage at the Inlet manifold heater terminal. Can anyone confirm if this
should show battery voltage on ignition? I'm not sure how this operates, if
it only comes on under a certain temp or should be on permanently.
news:ghGvi.309$%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.
#7
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
> Coolant Temperature Sensor for the Fuel Injection
> Loose clamps on the Intake Manifold Boot.
> Bad Fuel Injector Seals allowing air by them until they warm up and
> expand.
> Possibly a fuel pressure problem.
> To name a few possibilities.
>
> Did it have this problem BEFORE the full service?
Thanks Dave, yes according to the owner it has been a bit stuttery on
initial start off for some time. I checked the ecu temp sensor which is
giving normal readings (300ohm hot & 3000 cold) But I did notice there is no
voltage at the Inlet manifold heater terminal. Can anyone confirm if this
should show battery voltage on ignition? I'm not sure how this operates, if
it only comes on under a certain temp or should be on permanently.
news:ghGvi.309$%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.
#8
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
> Coolant Temperature Sensor for the Fuel Injection
> Loose clamps on the Intake Manifold Boot.
> Bad Fuel Injector Seals allowing air by them until they warm up and
> expand.
> Possibly a fuel pressure problem.
> To name a few possibilities.
>
> Did it have this problem BEFORE the full service?
Thanks Dave, yes according to the owner it has been a bit stuttery on
initial start off for some time. I checked the ecu temp sensor which is
giving normal readings (300ohm hot & 3000 cold) But I did notice there is no
voltage at the Inlet manifold heater terminal. Can anyone confirm if this
should show battery voltage on ignition? I'm not sure how this operates, if
it only comes on under a certain temp or should be on permanently.
news:ghGvi.309$%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.
#9
Guest
Posts: n/a
Re: Audi 80 splutters after cold start?
"dave AKA vwdoc1" <vwdoc1@hotmail.com> wrote in message
news:ghGvi.309$%Y7.74@nlpi069.nbdc.sbc.com...
> Coolant Temperature Sensor for the Fuel Injection
> Loose clamps on the Intake Manifold Boot.
> Bad Fuel Injector Seals allowing air by them until they warm up and
> expand.
> Possibly a fuel pressure problem.
> To name a few possibilities.
>
> Did it have this problem BEFORE the full service?
Thanks Dave, yes according to the owner it has been a bit stuttery on
initial start off for some time. I checked the ecu temp sensor which is
giving normal readings (300ohm hot & 3000 cold) But I did notice there is no
voltage at the Inlet manifold heater terminal. Can anyone confirm if this
should show battery voltage on ignition? I'm not sure how this operates, if
it only comes on under a certain temp or should be on permanently.
news:ghGvi.309$%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.
#10
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.
..