What is the normal temperature for a car's radiator?
1 Answers
A car's radiator temperature of 90 degrees Celsius is normal. If it exceeds 90 degrees, it is considered slightly high, but the typical alarm threshold is around 105 to 110 degrees. The car radiator, also known as the heat exchanger, is a key component of the vehicle's cooling system. Its function is to dissipate heat—coolant absorbs heat in the water jacket, flows to the radiator to release heat, and then returns to the water jacket for circulation, regulating temperature as part of the engine system. How the radiator works: When the engine's coolant temperature rises, the water pump circulates the coolant repeatedly to lower the engine's temperature (the radiator consists of hollow copper tubes; hot coolant enters the radiator, is cooled by airflow, and then circulates back to the engine cylinder walls), protecting the engine. In winter, if the coolant temperature is too low, the circulation stops to prevent the engine from becoming excessively cold.