Everything About the Car Cooling System: The Interconnected Roles of Water Pump, Thermostat, Fan, and Sensors

Car engines generate a lot of heat while running. Without proper cooling, this heat can cause severe damage. That’s why the cooling system is one of the most vital components of a vehicle—it protects the engine from overheating and ensures efficient performance. In this post, we’ll break down the roles and interactions of the water pump, thermostat, radiator fan, temperature sensors, and thermistor switch to help you understand how this entire system works together.     1. Water Pump: The Heart of Coolant Circulation The water pump circulates coolant (antifreeze) through the engine and radiator to carry away excess heat. It's typically driven by a belt or an electric motor. If the water pump fails, coolant flow stops and the engine can overheat rapidly. 2. Thermostat: The Coolant Flow Controller The thermostat is a temperature-sensitive valve that regulates when coolant can flow to the radiator. When the engine is cold, the thermostat remains close...