engine vibrates when my car is at idle. my engine vibrates and the RPM keeps reving up and down

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01-18-2002, 10:58 AM

heelu

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engine vibrates when my car is at idle. my engine vibrates and the RPM keeps reving up and down

between 1200 and 900. What's wrong with my car? Is it because of my GIAC chip?

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01-18-2002, 10:59 AM

Jon G

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spark plugs, coil pack...it could be a number of things.

find someone who has a vag com and see whats up.

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01-18-2002, 11:33 AM

ArTT Vandelay

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Check your hoses, especially the one between the fuel rail and the intake manifold...

my car was doing the same thing, I also changed my plugs on general principle.

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01-18-2002, 11:37 AM

SmokeyA4turbod@ebay

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You interfaced a Nokia? maybe its set to Vibrate.

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01-18-2002, 11:37 AM

~~ModifiedA4~~

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Could be idle control valve.

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01-18-2002, 11:57 AM

kyan

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It could be a misfire... Did the chk engine lite come on?

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01-18-2002, 11:59 AM

WYSIWYG

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vacuum leak somewhere

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01-18-2002, 12:04 PM

Audi juice

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Sounds like the problem I had when I had throttle body issues. But that only happened when tapped

the gas and let go.

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01-18-2002, 12:23 PM

Cool Craig

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GIAC...hmmmmm.......

I did my Ko4 / GIAC 3vK04 U/G in June or something, and I experienced the flux in the idle as well. I did go through the throttle adaptation correctly, but once I shut down and restarted..things were fine. This is also a common symptom of some crap or film on the throttle body, that area should be cleaned by one who knows what they are doing, its ez to make things worse than better. solvent and a dust free rag is used, but not for faint of brain.