Thermostat Replacement

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Online Auto Repair Manuals - Thermostat Replacement

ALLData: Do It Yourself Auto Repair Manuals

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A thermostat prevents coolant getting to the radiator until the engine warms up. Once the engine reaches its operating temperature, the thermostat heats up and the thermostat valve opens. The thermostat helps reduce engine wear and tear and excess emissions.

When do I need to replace a thermostat?

If the engine is running hotter than usual, or if the vehicle's temperature gauge is hanging out on the low side and the heater isn't doing its job, it's probably time to replace the thermostat, gasket and gasket sealant. If a visual inspection shows an open thermostat valve, the thermostat probably needs to be replaced.