89 200q ISV function

Tue Oct 4 14:58:57 EDT 2005

Ed,

I'd look for an air leak.  IME ISV won't be intermittent in operation.
Also, as Eric pointed out, the WOT switch could have bad wiring to it or
could even be misadjusted.  I'd still check for (listen for) idle leak(s).

Ingo

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