Why is my 2007 pontiac grand prix temperature going up

Asked by Dec 06, 2017 at 10:20 PM about the 2007 Pontiac Grand Prix

Question type: Maintenance & Repair

I just changed my engine and now the
temperature of my car keeps going up and
back down when the heaters on high...what
could be the problem?

1 Answer

115,015

Check the coolant level and purge air out of the system. You may also need a new thermostat.

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