Question about 1999 Pontiac Grand Am GT
Replace head gaskets & thermostat
Posted on Sep 12, 2009
Blown head gasket i have the same problem. Pull the intake off and it mite be the intake gaskets if so get fel pro gaskets they will never blow again a nother way to test and see if the headgaskets are blown is put a compression tester on each cyl and see if they have different compression they mite be a few pounds different but that is normal if there is a big drop in pressure there is ur problem but check the intake first then go from there but i changed the intake gaskets and they where blown and i put it back togother and i still had the same problem but i took it apart yesterday and it was the head gaskets
Posted on Sep 10, 2009
Check the radiator cap see if it hold the presure if not replace it
Posted on Sep 06, 2009
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Posted on Jan 02, 2017
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