1999 Pontiac Grand Am over heating and no hot air from herat

1999 PONTIAC GRAND AM
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1999 Pontiac Grand Am V6 Four Wheel Drive Automatic 160000 miles
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The engine over heats quickly and no hot air will come from the heater, and antifreeze over flows.
Dec 2, 2007 at 11:53 AM
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RASMATAZ
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Get the tests done below-

Have it block and pressure tested-do the block first to pinpoint a combustion leaking into the cooling system or a gas analyzer to sniff for hydrocarbons at the radiator fill neck.

Pressure test: do not do a pressure test if there's leakage at the headgasket this might cause coolant into the cylinders and lock it up or bend a connecting rod if cranked thereafter. The headgasket should be repaired before doing the pressure test.

If the block and pressure test passes check the following: Thermostat,Pressure test the Rad. cap,Clogged radiator,Fan clutch,Radiator electrical fan,collaspe hoses,water pump.
Dec 2, 2007 at 1:10 PM
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