S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Rough idle?

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Old 05-25-2001, 04:52 AM
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Default Rough idle?

Since I just got my S4, I don't have anything to compare with, but is a rough idle common?

The car idles between 800-850 RPM and vibrates the car noticably.

Kind of like this:
idle, idle, idle, rough, rough, idle, rough, rough, rough, idle, idle, rough... etc., etc.

Anyone have any ideas. This common? Sticky valve? ECU? Some vacume hose problem?

Thanks.
Old 05-25-2001, 05:40 AM
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CBJ
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Default Re 2000 S4, 24,000 miles - I notice the same often, more...

I originally brought it in a short time after taking delivery in 12/99. The dealer thought I might have a few sticky injectors, however, they did not have the parts and I did not go back. I recently had another dealer look at it and they reset the throttle adaptation. I still notice the same at red lights,etc. No problem, the car runs great. Many others have mentioned this observation on this site.
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