When I come to complete stops, (e.g. @ a red light) the tachometer slowly rises to 3,000 - 3,500 RPM's and the engine compartment shakes and roars as if I am accelerating. This has occurred at least 35 times since the original occurrence on 12/19/1999. I have not driven the vehicle since 02/29/1999. The car has been to two Ford dealerships six time to fix the problem. The following items have been replaced: Air bypass valve, iac (3 times - they claimed each one, including the original was faulty), on board computer. Yet the problem still persists. Ford has finally agreed to reacquire my vehicle. I have spoken to other 2000 Mustang GT owners (all with vehicles built in 09/1999) they also have idle issues. The two I have spoken with have a reverse problem. Theirs idle so low, the vehicle stalls. I think Ford should look into the GT's that were built early in the model year. I have not heard of anything with the GT's built later in the year.

- Los Angeles, CA, USA