Re: '87 5KCSTQ Idling Problem

[Rob Silcher <rsilcher@mc4adm.UWaterloo.ca>]

This is exactly what I did (before I read this).  Good to know I was on 
the right track.

After cleaning/reinstalling/removing 3-4 times (BTW starter fluid worked
great - *much* better than gunk and speaking of gunk the vavle had plenty
of it) the car idled at about 1200 rpm.  I was pretty sure the valve was
ok so I played with the idle screw. I was able to screw it in about 1 1/2
turns and it idled at 800-900 rpm. 

The only thing I noticed, upon startup it idles below this level (for a
few seconds) and after driving around town it started to idle around
1000-1100.  I suspect air is getting in somewhere. Not sure where to look
for next. At least its much better than 2800! 

Saturday I'll be driving 500 km to my wife's uncle for a safety - it will
be a good test.  I've been driving around without plates and a 10 day
permit (sure get some strange looks). 

Thanks again for all the help guys.  I would have been really stuck 
without all of your advice!

-Rob Silcher

On Thu, 24 Aug 1995 PDQSHIP@aol.com wrote:

> Think you should go back to the idle screw....  The stabilizer valve opens on
> a duty cycle, letting in more air to the intake not less.....  So after
> cleaning, and it still idles high, chances are that the stabilizer is fine,
> its prolly that the stabilizer even when at "full duty" close, there is too
> much air getting into the intake manifold......  If you take the screw at the
> t-body all the way out, you will see a rubber gasket and a pin valve type
> closure.....  Audi presets the idle, puts some super goop on the threads of
> the screw, and figgrs the stabilizer will control forever.....  Reality is,
> that the screw tends to back out over time, esp if the rubber gasket becomes
> degraded......  This lets too much air into the intake, and the stabilizer
> can't "close duty" enough to compensate for the bypass......  So do a few
> cleanings with the gunk or starter fluid, and try the valve again, it could
> always use the maintenance, but my guess is still that the t-body screw is
> starting to back out......  Good luck
> 
> 
> Scott
> 87 5ktqRS2
> 87 5ktq stock
>