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

 

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jojox, 3.5L V6, Springfield Gardens, NY, August 22, 2013, 18:42
 Rookie

is it possible I might have a blockage in my heater core,cause there's no heat blowing from the fan.

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  • Answer #1

    August 22, 2013, 18:47
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     Master

    Overheating and no hot air from heater are both tell tale signs of LOW COOLANT.

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    jojox, August 22, 2013, 18:52
     Rookie

    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.

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    pushrod, August 22, 2013, 18:58
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     Master

    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.

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    Tbone1980, August 22, 2013, 19:59
     Journeyman

    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

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  • Answer #2

    August 22, 2013, 22:08
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     Master

    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!)

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  • Answer #3

    Greg's Orange Auto (14224 Answers) , Orange, CA - (714) 361-9386
    globalhelper August 23, 2013, 06:07
     Master

    POSS BLOCKAGE IN RADIATOR OR COOLING FANS ARE NOT WORKING PROPERLY

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