No idle help...

Nate Stuart stuart at
Tue Sep 18 01:31:18 EDT 2001

Did you check your oil fill cap??

'89 90tq (yay, don't run yet, but.... :)

----- Original Message -----
From: "Bernard Littau" <bernardl at>
To: <quattro at>
Sent: Monday, September 17, 2001 7:28 PM
Subject: No idle help...

> '88 5ktq.  Car stalls when you let off the gas pedal.  Runs fine when one
> driving and when holding the rpms up.
> I have checked the decel valve, and it appears not to be a problem.  I
> disconnected the large hose, and plugged the hose and the valve.  Same
> result.
> I checked the ISV per SJM web site.  My normal reading is 595 mA with the
> engine off, which is high according to the site.  When I disconnect the
> green wire on the coil, 425 mA through the ISV, which is almost spot on to
> the suggested 430 mA.
> I also notice a distinct click in the vicinity of the decel valve when I
> remove/connect the green wire on the coil -- I take it this is good as the
> 1200 rpm override seems to be doing something.
> My next guess is a vacuum leak somewhere.  Naturally everything seemed
> before the hall sensor went south last week.  I now have a new distributor
> and hall sensor, but it will not idle.  Any suggestions?  It got dark so I
> had to stop looking, so I thought I'd ask before I went to do battle on
> Wednesday.  I've got a class tomorrow, so no Audi for a few more days :-(
> Thanks,
> Bernard Littau
> Woodinville, WA
> '88 5ktq

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