RE:1989 Audi 90Q Idle hunting2 retrying

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

Trying again.  I did try and post this, but somehow it did'nt get on the
list or if it did, I did'nt receive the digest.  Apologies if it did and
this has now become irrelevant.  The e-mail servers and network services
are un-reliable here.  After all it is the federal .gov

<<<<<<
I still have a slight problem with my 1989 Audi 90 Q.  I cleaned out the
idle
stabilizer as was suggested, only now it will not idle when the engine
is cold, and if I
turn the air conditioner on, it will drag the revs down to about 500 --
600 RPM,
instead of the revs going up to compensate for the additional load of
the air
conditioner.   Since an idle stabilizer cost so much, I hate rush in and
replace it
without being sure it is bad.  
>>>>>>>

I think you have my car.  Happens exactly on my 1988 80q.  

I finally decided to pull the codes.  I got the following:
2121 - Problem: Idle switch.  Repair: Check idle switch and wiring
2123 - Problem: Full throttle switch stuck closed or problem in wiring
to switch.  Repair: Check full throttle switch and wiring.
(Bentley)

I'm wondering if you'd get the same codes?

There are about 2 pages in Bentley that describe how to fix the problem.
I can fax or mail you a copy if you so wish.  As yet I have'nt gotten
around to _actually_ fixing the problem (just laziness).  As has been
suggested recently, it could also be a bad OXS.  Again, I have'nt
_actually_ gotten around to do something about this.

I'm afraid I can't say that I've tried any fixes yet but I plan on
getting around to them...soon I hope.

<<<<<<
A friend has suggested that may be the brain box (electronic control
Module
(ECM)) thinks there is a short in the system and I need to disconnect
the ECM
and reconnect it.  Does this make sense??  if it does, were is the ECM
located on
this model??   
>>>>>

Right front kick panel by the glove box.  You'd have to take out the
glove box.  There should be a panel you snap open and the ecm should be
there (seen it done).