While the engine cooling system relies on a large network of parts, including a radiator, a thermostat, fluid channels, and a series of hoses, the heart of the system is the water pump.

The water pump (technically the coolant pump) is powered by the engine and circulates liquid coolant through the engine cooling system. Leaks and noise are signs of water pump failure, which can ...

a thermostat valve that opens when the desired operating temperature is reached and a water pump (or coolant pump) to circulate coolant through the engine, hoses and other components. Most ...