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Re: Idle problems again
> a sporadic fast idle at 2000rpm and someone suggested
I would check the following:
1) Idle stabiliser valve and its relay - next time you have fast
idle, disconnect the controlling voltage to the valve, if the idle
goes down to a stutter, you have found the problem. Since it
is sporadic, it is more likely to be the relay.
2) Throttle body - is two staged. I had a fast idle (2800) on my
Jetta and it turned out to be the first stage flapper valve
in the TB was stuck open.