Engine Cooling problem
1992 Chevy Blazer 6 cyl Four Wheel Drive Automatic 169, 00 miles
Hi, we had a problem with thermostat leaking so it was replaced, and then it started overheating. Pulled thermostat and ran without if for a while, changed water pump, new thermostat, continued to overheat. Pulled thermostat and ran without, tried 4 different thermostats. Flushed radiator. Found out that autoparts place sold wrong water pump. Replaced with right waterpump. Put in new heavy duty thermostat. Doesn't overheat, but runs about 250 check gauge light comes on and off. We have tried to purge air, got some out, but that doesn't fix problem. Flushed heater core, has more heat and replaced blower motor relay. Doesn't seem to actually be overheating. Water circulating, Idled for over 30 minutes, with check gauge light intermittent, gauge reading between 240-250, never hits 260. Did not overheat. I'm going to try to replace radiator cap and see if that helps. Somehow I think we are overlooking something. I am in a delivery business, and I have to travel several miles sometimes, and am worried about overheating and damaging the vehicle, and getting stranded in middle of nowhere. Runs great without the thermostat by the way. Please help.
have the same problem?
Monday, December 29th, 2008 AT 1:56 PM