I replaced the head gaskets, new water pump, new thermostat, car still overheats. The fan only comes on when the a/c or heater is on? What could be the problem, and how much does it cost to fix it
Ckeck to see if thermostateis not upside down
SOURCE: 2000 chevy lumina. Is fan supposed to come on when car started
no fan comes on when engine cold start up .but it will come on when you turn on air conditioning or defrost on .if engine idling a while when temp get 190 degree the fan will kick on.if over heating you got air in system .wait until cools check coolant add more .crank engine let it idle few. minutes when start warming up turn off engine wait a while before removing radiator cap so you wont get scald.add more coolant .crank it again starting warming up turn off engine wait a while .add coolant .keep doing this procedure until your coolant stop dropping off .if you do this more than 6 times you got a leak some where.check crank level for signs.if oil level higher than normal.if everything looking good.when engine cool make sure add coolant to over flow jug cold level mark.
SOURCE: 2000 Malibu keeps running hot.
You replaced the head gasket but did you get the head or heads checked for cracks or check the block for warpage?
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