2002 Pontiac Grand Am

Asked by Jul 13, 2016 at 11:46 PM about the 2002 Pontiac Grand Am SE

Question type: Maintenance & Repair

How can I test thermostat in car?

1 Answer

68,995

Crank car from cold start,feel the top and bottom radiator hose,then let it warm up a few minutes,if thermostat is good both hose,s will be warm in just a few minutes,if not,you may need a new thermostat.This is the only way to check it with out removing it.

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