1991 Chevrolet Cavalier Q&A

1991 Chevrolet Cavalier Question: overheats

have new radiator, hoses ok, new thermostat but car overheats. If I run the heater it cools it down a lot -
Answer 1
Check the radiator fan operation, sounds like it's not doing it's job. -
Answer 2
possible air pocket in cooling system. try bleeding it -
Answer 3
check the type of coolant u have they recommend dexcool for all gm vechicles and its the orange color not the green color coolant plus check the fan operation and if thts not it burp the system or flush the system it could be clogged -
Answer 4
same problem..new fuel pump wire harness or fuel pump..make sure you have the fuse for the heater first -
Answer 5
check water pump-do you lose radiator flluid -
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A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.