RE: 1989 Audi 90 Q Idle hunting

["Bhatti, Mohammed K 001" <MOHAMMEDB@sa15wpoa.us-state.gov>]

<<<<<<<
I have a slight problem with my 1989 Audi 90 Q.  When I come to a stop
light, the
idle speed returns to where it should be (around 850 rpm), but a couple
of seconds
after that, it starts to climb up to a 1000 rpm or higher (as high as
11--1200 rpm). 
Sometime it comes back down to a 1000 rpm and sometime it stays at the
higher
revs.  I believe auto technicians call this "idle hunting".  Does anyone
have any
suggestions.   Is there a idle stabilizer on this model??  

I am open to any suggestion(s).   Thanks a lot.
>>>>>

I'm having similar problems with my 88 80Q.  Did the usual clean ISV
routine.  Did'nt work.  Got fedup and dropped it off at the dealer this
morning.  Dealer called and said that one of the vacuum hoses has a
leak.  Not sure which one, maybe someone on the list knows.  Dealer
quoted $12 for the hose + $$$ for installation.

I'll get the car back tomorrow and see if that really worked.  Let you
know the part number and whether I get any improvement.