Pontiac Problems? Ask a Mechanic for Answers ASAP
It sounds as though the coolant is flowing completely through the entire cooling system. Check to make sure the bottom or return hose from the radiator to the engine isn't sucking closed when the engine is running, either idling and/or revved up.
Did you look to see if the bottom hose is collapsed?
No, sucked close.
No, just look at the hose and see if it is sucked closed while the engine is running, idling and have someone else rev the engine up and see if the hose sucks closed.
You may have a partially clogged radiator. You should have it flow tested, rodded out or replaced.
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