Changed waterpump,thermostat,radiator ,and bled the air out still gets hot also heat only comes on once in awhile

Asked by Dec 12, 2015 at 11:33 PM about the 2006 Pontiac Grand Prix GT

Question type: Maintenance & Repair

3.8 supercharged new heads In the vehicle recently .

2 Answers

65,065

Sounds like there's still air in the system. But if not it's possible the head gaskets were installed on the wrong sides of the engine or upside down. If this happens some of the coolant passages are blocked causing it to heat up. HTH. -Jim

3,825

You've got air in the cooling system. Use the bleeder valve near the thermostat to get rid of it and all will be well.

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