Over heating

Asked by anthony May 02, 2018 at 07:12 AM about the 1999 Pontiac Montana 3 Dr STD Passenger Van

Question type: Maintenance & Repair

I've done everything, from changing head gasket
timing belt gasket bled system and it still
overheating, but when I turn my heater on it go's
down.

2 Answers

Phil answered 6 years ago

If the system was sludged up from oil and coolant mixing, mix up some Cascade dish soap and water and run it through the system. Sounds like a flow or fan issue.

Mark helpful
38,945

beatupchevy answered 6 years ago

on some cars the coolant fan will come on when you use the A/C, with yours it seems it'll come on when you use the heat , you should have checked to see if the fan came on when it got hot , then I would have suggested the sensor ,

Mark helpful

Your Answer:

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