S6 cold start problem

[AUDIJIM@aol.com]

Completely stock, 78,000 mile, 1995 Audi S6 starts perfect, but after about 
30 seconds, the car starts to stumble and then catch itself, for about a minute 
or so, and then idles normal. Any ideas? I ran VAG-COM on it before I started 
it and there were no faults except for the typical knock sensor and throttle 
position faults due to the engine not running. While the engine was running, 
no faults. I have limited time to trouble shoot this car and thought I'd ask 
the list. 

Could someone also post this on the S-car list for there input.

Thanks,

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