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many things could be wrong. coolant low or needs changing, radiator or coolant lines clogged. water pump bearings beginning to seize up. Coolant temperature sensor. here is a website that may apply to your vehicle to check the coolant temperature sensor. http://www.mazdaforum.com/archive/threads/coolant-temp-sensor-how-to-replace-pix-4746-1.html

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16y ago

What else can I help you with?