2002 Pontiac Grand Prix Repair Question
Pontiac grand prix overheating
Answer
sealer is always a bad idea. it clogs the radiator and needs to be acid flushed to get it out.
from overheating, you need a leak down test to confirm you did not damage the head gaskets.
Roy
I never used a sealer at all and to flush it I used prestone im assuming the gunk in there was blocking the problem so it didnt overheat now that its out it overheats again . maybe a water pump?
Also there is coolant in the oil so I dont think its a blown head
if there is coolant in the oil as you said, then it does have a blown head gasket.
the gunk must be pressure flushed with acid to rid it of the stuff and re gain flow.
Roy
not until those are confirmed, especially the fact that you confirmed the head gasket is bad with coolant in the oil.
roy
Im sorry I meant there is NO coolant in the oil
we are still at the radiator needing to be flushed out for flow with a pressure treatment.
Roy
There is no coolant in the oil I meant
same answer as above.