Ok, I am still having the problem with my SC bogging out and dying after starting it. It usually does it on cold starts, It will run good for about 2 secconds and then it will start bouncing up and down from 1,000-200 RPMs untill it just dies. it will go good once you drive it around for awhile, it also always has a put put sound from the exaust and the idle is always up and down. there is just something not right. I replaced the MAF and bolth the 02's because those were the only ones throwing codes. I also Cleaned my IAC with sensor cleaner. so im thinking either I have to buy new IAC valve or maybe someone has a different idea??!! Please help