Does the Fan Run at Idle Speed?
2 Answers
Generally, the car's fan starts running after about 10 minutes of idling. Below is an introduction to the fan's behavior during idling: 1. Rate of Water Temperature Rise: The operation of the fan at idle depends on the rate at which the water temperature rises. The time varies for different cars under different conditions, being slightly shorter in summer and longer in winter. When the car is moving, the time is also slightly shorter. 2. Older Cars with AC on at Idle Can Be Harmful: In older cars, the engine cooling fan is controlled by the engine crankshaft speed. At idle, the engine speed is low, resulting in a lower cooling fan speed. 3. Increase in Engine Temperature: As the engine temperature rises, the water temperature also increases, which can cause some degree of damage to the car engine.
Will the car's fan run at idle? It may or may not, depending mainly on the engine temperature. The fan is a key component in the cooling system, designed to help the engine maintain its optimal operating temperature. If the engine heats up while idling, such as when you're stuck at a traffic light or during a hot summer day, the fan will automatically activate to blow air for cooling, preventing engine damage from overheating. This control is managed by a temperature sensor, which triggers the fan to operate when the temperature reaches a set value. However, if the car has just started or the temperature is normal, the fan doesn't need to run. I recommend keeping an eye on the temperature gauge or warning lights on the dashboard; if the fan consistently doesn't activate, it's necessary to check the sensor, relay, or fuse, as issues with these components can interfere with the fan's operation. Don't overlook regular maintenance of the cooling system, and timely cleaning of dust can also improve fan efficiency, preventing minor issues from turning into major problems.
