its the fast idle thermo valve ur gonna have to take ur fast idle thermo valve off. take off the plate held on by two screws and than ur going to see a white wax piece. than your going to hve to get a screw driver and screw that piece as far down as possible or until snug and it should fix the problem. if that doesnt work than it coule be a vaccum leak or something. but this happened to my integ and it fixed it.