One of the most common causes of a car breakdown is engine overheating due to a cooling system failure. Because there are no visible warning signs of deterioration, radiator and cooling system maintenance service is often overlooked until it’s too late. The car’s engine cooling system keeps the engine cool and helps keep the temperature warm enough to ensure efficient and clean operation. Main components of the cooling system include the radiator to dissipate heat, a radiator hose, a fan or multiple fans to ensure airflow for cooling the radiator, a thermostat valve that opens when the desired operating temperature is reached and a water pump to circulate coolant through the engine and other components.