I just replaced the intake gasket, triple checked for vacuum leaks with engine cold and hot. The TPS and IAC are not that old. Neither is the MAF. It idles at 1500RPM when started cold and around 700 when started warm. I know it could be a faulty IAC but I wanted to check first to see if anyone else has dealt with this and it be something other than the IAC. 274000 miles and other than this issue it runs strong.