80q running rich at idle

[Lundy, Andrew]

A bad O2 sensor would/can cause a rough idle.

Another possibility is that your temp senders for your water temperature are
sending the wrong signal to the ECU (i.e. sending a cold signal when it is
warm).  Does your temperature gauge work often??  If one signal is off then
the other may be too!!

HTH!!
---
Andrew Lundy
90 80q
99 A6q

-----Original Message-----
From: Blu [mailto:BLUDODGER at worldnet.att.net]
Sent: Wednesday, November 28, 2001 1:49 PM
To: quattro at audifans.com
Subject: 80q running rich at idle


I can smell that my engine is running rich at idle , does anyone have a
checklist of items that could be responsible for this?

FYI --my cat went bad which leads me to believe something is definitely
wrong. The car starts pretty well and there is just the slightest roughness
in its idle. Would having a bad cat have anything to do with the car running
rich (or at least smelling like it running rich)? would a bad cat "throw
off" the o2 sensor?

Thanks
Blu
'88 80q