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Coolant overheat light on. Fan does not run


Robert B

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It's also possible you have an air pocket in the coolant causing the switch not to heat up enough. Did you burp to confirm? These things are prone to air pockets when filling and ive read a number of people having air in the shstem from the factory.

There's a small burping port on where the coolant goes into the engine.

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a leaking head gasket will put air into coolant as well.  Hisun engines are known for head gasket failure.... while its running hot, look at coolant recovery bottle.. if you see tiny bumbles rising, its a head gasket leak.. hopefully its just your sender. you can jump it to run continuously til you can replace it

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