Subject: Cold hesitation

[C1J1Miller@aol.com]

You wrote:
==oooo==
Cold hesitation. Could be a bad oxy sensor, I'm thinking, but wouldn't a
bad oxy sensor result in a "Check Engine" light? I'm not receiving any dash
warnings, however, when my engine's cold it BOGS to a fairly bad degree.
Are diagnosis faults only recorded when there's a corresponding "Check
Engine" warning, or is it a consistent thing?

Now do you see why I need the service training manuals or the Bentley?!
==oooo==
Cold hesitation: have you run the error codes?  I don't know the proc. for the
V6... but I think it's a familiar blink code procedure.  Seem to remember
Andrew Duane saying there's a jumper that's supposed to come with the car...
You could try clearing the computer memory (pull fuses to control unit) to see
if that fixes your problem for a while; if it comes back, then check codes
again.
-
I've got the Bentley for several cars (not yours though), as well as the
service training booklets for the urq, '91 200q, and S4/V8.  They basically
describe the engine parts and pieces, the control unit, and how they work
together.  Tells you more about how they work than anything, little in the way
of troubleshooting.  The bentley tells you more about how to take apart/put
back together, as well as providing some troubleshooting information.  

HTH, Chris Miller, Windham NH, c1j1miller@aol.com
'91 200q =>  http://members.aol.com/c1j1miller/index.html