A4 engine revs
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A4 engine revs

 
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Emoor
Guest
Posted: Thu Sep 29, 2005 1:10 am    Post subject: A4 engine revs Reply with quote
My 1994 manual Audi A4 1.8 has just developed a problem - The engine revs
at park constantly fluctuate between 1500 rpm and 3500 rpm approx. When i
try to drive the revs rise to to no more than 3500 rpm and then die away to
1500 rpm, meaning i cannot accelerate. This ocurs in each gear. The AA
man suspected an air flow meter and/or engine management fault. Has
anybody any ideas on the cause of the fault?

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Iain Miller
Guest
Posted: Thu Sep 29, 2005 3:11 am    Post subject: Re: A4 engine revs Reply with quote
"Emoor" <jonny.nessa@btopenworld.com> wrote in message
news:145095057b16acdd2225d83cccd37302@localhost.talkaboutautos.com...
Quote:
My 1994 manual Audi A4 1.8 has just developed a problem - The engine revs
at park constantly fluctuate between 1500 rpm and 3500 rpm approx. When i
try to drive the revs rise to to no more than 3500 rpm and then die away
to
1500 rpm, meaning i cannot accelerate. This ocurs in each gear. The AA
man suspected an air flow meter and/or engine management fault. Has
anybody any ideas on the cause of the fault?

Could be a lot of things....

Might be a sensor problem of some kind. Also could be a vacuum leak.
Suggest you start by checking vaccum hoses & looking for splits etc. You
might also try cleaning the throttle body. A MAF sensor would be a likely
candidate as these do have a habit of failing & would be a good place to
start - not the cheapest thing in the word though.

Its less likely that the EM system itself is at fault, more that its being
fed duff information.
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Emoor
Guest
Posted: Fri Sep 30, 2005 2:12 am    Post subject: Re: A4 engine revs Reply with quote
Thanks very much for the feedback, I will have a check of the hoses and
throttle body.

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