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franknl
New User
Aug 29, 2010, 2:25 PM
Post #1 of 2
(1204 views)
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1999 Audi A8 engine dies
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I have an Audi A8 '99 and when it's over 86 degrees outside and the revs drop under 1000 the engine drops away 'sometimes'. I notice it happens more often when a) the gas is almost empty b) the car has been turned on, off for a bit but not enough to coolo off and on again in the same ride.
The Audi dealer replaced two sensors which 'always are the issue when this happens', but that didn't work at all.
Anyone knows what this is or what to do? I'm getting quite desperate.
Edit: It's a V8 4.2l, 150.000 miles on it.
(This post was edited by franknl on Aug 29, 2010, 2:29 PM)
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Sidom
Veteran
/ Moderator
Aug 29, 2010, 5:54 PM
Post #2 of 2
(1185 views)
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Re: 1999 Audi A8 engine dies
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There is not really a whole lot of info to go off of here.. You mentioned "drops under 1000 rpm" I would have to check the exact specs but idling over 1000 rpm for any car is a bit high for normal conditions and this could be part of the problem.....
I would make sure there isn't any vacuum leaks or false air getting past the MAF sensor (air intake hose off or broken). It's possible you have had a vacuum leak that is now getting worse and that would make a car die @ idle, it can also make an engine idle high but it should be setting a code.
Are you getting any P0171 or P0174 codes?
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