last few months temp gauge gradually getting hotter, fan comes on but not for very long and it usually comes on sooner when its just idling. Original eveything except coolant which was flushed at the dealer 2 years ago. Thermostat or relay? Not losing coolant, plugs ok,and no white smoke. Car runs fine except for the temp gauge being higher than usual. Any suggestions 90,000 km
Tags: 2.2, 2001, cavalier, overheating