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1. Insufficient coolant. 2. Water pump drivebelt defective or out of adjustment. 3.Radiator core blocked or grill restricted (not enough air passing thru the radiator core) 4. Thermostat faulty or has failed. 5. Electric fan blades cracked or broken. 6. Radiator cap not maintaining proper seal. 7. Timing out of adjustment. 8. Faulty temperature gauge sending unit.. sits next to thermostat housing activates fan

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17y ago

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