Hi Fellas , I have searched on here and else where but I cannot get a good answer. Ever talked to counter jockeys at auto parts stores. What I have is this, upon a cold start the engine will rev up to 2500 to 2800 RPMS then settle down to 750 or so. On a warm start it will go to 2000 or so. I have changed the air temp sensor, ceaned the "throttle body" done a hard reset and do the gas peddle thing. I have no air or vacuum leaks. Any ideas ???