What Causes the Car Radiator to Stop Circulating Water?

[WyattLynn]

Car radiator not circulating water may be due to a malfunctioning water pump or thermostat, or a blockage in the water passage. The lack of coolant circulation can significantly impact the engine and may easily cause engine damage. The car radiator, also known as the heat exchanger, is a key component in the car's cooling system. Its function is to dissipate heat. The coolant absorbs heat in the water jacket, flows to the radiator to release the heat, and then returns to the water jacket in a continuous cycle, achieving the effect of heat dissipation and temperature regulation. As an essential part of the water-cooled engine's heat dissipation circuit, the radiator absorbs heat from the cylinder block to prevent engine overheating. Due to the high specific heat capacity of water, the temperature rise after absorbing heat from the cylinder block is not significant. Therefore, the engine's heat is transferred through the coolant liquid circuit, using water as the heat carrier, and then dissipated by convection through large-area cooling fins to maintain the engine's optimal operating temperature.