S6 cold start idle stumble

[AUDIJIM@aol.com]

Hey guys,

I have this 95 S6 that had a cold start idle stumble about a week ago. I 
replaced the O2 sensor and the ECT sensor. That cured about 95% of the problem. 
Now, after about 30 seconds after the first start of the day on a cold engine, I 
get a little idle stumble like before, but not as severe. This morning, 
before I started the car for the first time, I removed the Air Idle Control valve 
and cleaned it out with carb cleaner. But I installed a known good spare AIC 
valve from an AAN I have on an engine stand I started the car and it duplicated 
the stumbling idle. So I reinstalled the original AIC valve. I'm now looking 
for ideals on where to turn, I need to stay focused on my job search and can 
afford the time being spend on this car. I have no problem trouble shooting this 
problem if I had the time, I'm looking for someone who has BTDT. The Audifans 
Knowledge Base does not have this as a topic, but I will add it to the KB as 
soon as I find out what the problem is! I will be in and out of the house 
today, but anyone who has any info on this, please feel free to call me at 
856.482.1645 or my cell at 856.577.3132.

Thanks in advance for your help,


Jim Furdyn
1983 UrQuattro #170 
1987 4000cs Q
1987 Euro 200/5000cs TQ 284,000 miles
1996 A6 Quattro Avant 
1987 Mercedes Benz Truck model 1219