Ok so heres the the deal, i bought the car from a dealership, and it had a blown head gasket, dealer fixed it and i bought the car, and about a week later started having problems, so i took the car to a shop, who told me i had a blown head gasket, so i took it back to the dealer, who fixed it again, but this time after getting the car, it idles at 1500 rpm, and was wondering if there is a way to fix the probem without messing with the ECU?
