Mechanics

GMC S15 COOLANT PROBLEM

1988 GMC S15 • 150,000 miles

When I bought it it a few weeks ago it was overheating, I replaced the thermostat and the water pump and it is still overheating, the fan is a thermostat controled fan and it seems to be fine and I see no problems with radiator flow. I am stumped
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Guest
October 19, 2012.



Besides the temp gage, any signs of overheating? Is the coolant reservoir over-flowing? You can see coolant flow through the radiator? You may need to flush the cooling system? Could be air in the system? Combustion gases in the coolant?

JDL
Oct 19, 2012.