ok, well i bought the car with the engine already swapped, so is there a way i can see if they put in the 2000 harness and computer? ( like is there a way i can just look and see the year or a number something on the computer?). yes the check engine light is on and when the car gets warm the idle bounces up and down, up and down. it also runs a little bit to hot, but doesnt overheat or anything.