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Coolant won't circulate - 1999 Ford Explorer

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How do you know that the coolant won't circulate? The coolant shouldn't circulate until the engine reaches a temp that tells it to cool the engine. At that time the thermostat will kick on and allow the coolant to circulate. If it still won't then you either have a bad pump, a bad thermostat, or the belt isn't on the water pump.

Posted on Sep 06, 2010

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