Hi guys. I gotta problem with my '93 Audi V8. On a cold start, the car starts fine. Then when I shift the gear into drive or reverse, the car stalls. When i repeat process, the car is perfectly fine and stays like that for rest of the day. This only happens in summer temps. What gives? My guess would be that the springs housing throttle body are weak and it's cutting off air supply. I also have a '97 A6, and its doing the same thing. HELP!