tracker_57
New member
Yesterday the temp gauge started to creep up towards hot and then the check engine light came on. I added more coolant thinking that it might have been low. Ran it for awhile longer and now the temp gauge seems to have come down to a more acceptable level and check engine light went out. However, now since this happened, when I put the car in park after driving, the idle speed goes up by itself. Sometimes it sounds like its going fairly high, although car doesn't have a tach. to be able to check it exactly. At times the idle speed seems to go high when vehicle is in motion too. (noticeable in parking lots, etc.) Could this have anything to do with perhaps the thermostat going bad? Or am I looking at something else?