I have a 1997 Lumina 3100, 4 door sedan. It has about 160,00 miles on it. My check engine soon light has come on and stays on all the time. My temp guage shows that the car gets hot if the heat is turned on. When the heat is off it doesn't get hot. Can this be the thermostat? I recently had an alternator replaced, and a new key and ignition switch added. Could this have anything to do with the heat guage? I am having to replace coolant because of a small leakage somewhere (don't know where it is leaking). Winter is here and I need to use the heater.
Nov 29, 2007 at 5:27 PM