Toyota 4-Runner Thermostat replacement
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Toyota 4-Runner Thermostat replacement
When do Toyota 4-Runner thermostats need to be replaced?
A car's thermostat is part of the Toyota 4-Runner's cooling system, the thermostat regulates the engine’s operating temperature and flow of coolant circulation through the engine.
It keeps your Toyota 4-Runner's engine at the optimum running temperature so the engine has time to warm up on startup and also cool down when it is hot.
The thermostat is a valve that opens and closes to allow or deny coolant flow. When a thermostat fails it can get stuck open or closed. This can cause the engine to overheat.
Toyota 4-Runner thermostats can fail due to a defect, old age, overheating, and sludge buildup. If it does malfunction it can lead to serious problems and should be replaced as soon as an issue is detected.
