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In a 2001 Nissan Frontier, the thermostat, a component of the cooling system, can be found on the front side of the engine, positioned above the water pump. Its primary function is to regulate safe temperatures inside the vehicle. If the thermostat malfunctions, the car won't be able to monitor the engine temperatures accurately, leading to insufficient coolant circulation when necessary. This could result in overheating in the short term and ultimately, cause the head gasket to crack in the long term. Repairing a faulty thermostat promptly is crucial, as neglecting it could lead to expensive repairs amounting to thousands of dollars. Getting a new thermostat installed typically costs a couple hundred dollars and can be completed within an hour.
The 2001 Nissan Frontier's thermostat can be found on the front side of the engine, positioned just above the water pump.