I have expierenced the same problem in my 2000 CSVT. Took it to the dealer and they replaced the IAC and that took care of the problem for about a month. Came back and they replaced the IAC again. Fixed it for about 3 days. Took it to a different dealer. They said the filiment in the MAF was bad. They blamed the K&N air filter in the car and told me to use the factory element. To me it sounded like a load of crap but I put the factory element back in anyway. It has been over a year and the problem never came back. My only conclusion is that the K&N was the problem. The only thing I don't like about this is now I have to shell out the $$ to replace the paper filter every so often. I was not mad about power loss, because I dynoed the car the weekend before I took out the K&N and there was negligible benefit.
SVTGS5
