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Q:

overheats on 1991 Chevrolet Cavalier

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
have new radiator, hoses ok, new thermostat but car overheats. If I run the heater it cools it down a lot
(5) Answers
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
same problem..new fuel pump wire harness or fuel pump..make sure you have the fuse for the heater first