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Coolant boil in the reservor - Cars & Trucks

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Check to see if the thermal switch (usually mounted within the radiator shrouding, near the cooling fan is working properly.. some of these allow the fan to run on after the car is off to continue a slow cool down of the engine. sometimes when this is malfunctioning, the coolant will boil back into the res.

Posted on Jul 29, 2013


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