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ISV problems

From: "Justin" <baselope@bellsouth.net>

>Please note that I forgot to mention that I had also disconnected the ISV
>and the surging did not subside...in fact it went to a higher RPM.  So I
>assume it is working as it is supposed to.  Also...I went out and started
>the car this morning and the problem had dissappeared.   Totally

If you disconnected the ISV, the revs should have dropped.  Your ISV is 
probably stuck open (also check your throttle bypass (large brass screw) in 
the throttle housing - I had one fall out on me).

1984 Audi 80 quattro
1989 Audi 100 Avant