Question about 1997 Mazda 626

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My radiator was changed and the thermastat but my car is still over heating, why could that be? nohoses r broken.

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Sounds like a head gasket blown, when engine is cold, remove rad cap and make sure rad is full, start engine and see if bubbles are pushed out of the rad filler spout, a blown head gasket will pressure up your coolant system, was the rad changed because of overheating, do you have the thermostat installed wrong? the sensor side toward engine. if head gasket is ok, next you could check your rad cap, is the gasket ok? can you check if it holds the required pressure. might need replacing. also if you could pressure test the coolant system and see if it holds.

Posted on Dec 30, 2010

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