2005 Chevrolet Malibu Q&A

2005 Chevrolet Malibu Question: I replaced my thermostat, my water pump, my ,and my engine still overheats.

is it possible I might have a blockage in my heater core,cause there's no heat blowing from the fan. -
Answer 1
Overheating and no hot air from heater are both tell tale signs of LOW COOLANT. -
Comment 1
it has plenty of coolant, what else might be the problem.. I really don't know, its got the right thermostat, and the dex tro coolant. -
Comment 2
IF, IF it is FULL of coolant and radiator fan(s) are working, it is possible a head gasket may be defective! Repair shop can do a combustion leak test to confirm or refute. -
Comment 3
also could be faulty water pump,Have seen a few cases where the impeller comes disconnected from the shaft..if compression is ok as pushrod stated need to confirm that the pump is circulating the coolant propperly -
Answer 2
Feel the the inlet and outlet pipes to the heater core. If the inlet is a lot warmer than the outlet, the heater core could be plugged. (Careful not to burn yourself!) -
Answer 3
POSS BLOCKAGE IN RADIATOR OR COOLING FANS ARE NOT WORKING PROPERLY -