What Causes the Radiator Fan Not to Spin?
3 Answers
The radiator fan not spinning may be due to a faulty temperature control switch. Here is relevant information about the car radiator fan: 1. Whether the fan is key-controlled: The radiator fan is directly connected to the battery, so as long as the battery has power and the engine temperature is high, it will continue to spin until the temperature drops. This is because the set values in the ignition-off state and driving state are different. 2. Driving temperature: When the engine is off, the fan starts working at 105 degrees and stops at 85 degrees. Upon restarting, it enters driving mode, where the fan stops working below 100 degrees. After turning off again, the temperature will certainly not reach 105 degrees, so the fan naturally won't operate.
The car's radiator fan not spinning is a major hazard in my opinion. It could stem from several common issues: the most frequent being a burnt-out fan motor, or a malfunctioning temperature sensor. The sensor is responsible for monitoring the water temperature to activate the fan; if it fails, the fan stops. A faulty relay could also disrupt the signal, causing the fan to stop working. A blown fuse is another major culprit—check the engine compartment fuse box for quick troubleshooting by replacing the one labeled for the fan. Poor wiring connections, short circuits, or aging wires are also common, especially in older vehicles. The consequences of a non-spinning fan are severe: the engine could overheat, smoke, or even be ruined, making it particularly dangerous during long drives or hot weather. Always keep an eye on the temperature gauge, and if you notice anything unusual, stop and inspect immediately. My old car, which I've driven for over a decade, had a similar issue, and timely repairs saved me from a major overhaul.
Hey, new car owners, listen up! If the radiator fan stops working, it's most likely due to a blown fuse or a faulty relay. Simply put, the fuse protects the circuit, and the relay controls the power flow—if either fails, the fan won't operate. It could also be a broken fan motor or a malfunctioning coolant temperature sensor—think of the sensor as the car's thermometer; if it fails, the fan won't start. Wiring issues like loose connections, exposed wires, or short circuits may also be the culprit. Don't delay fixing this—a non-working fan can cause the engine to overheat, leading to smoke under the hood or even a breakdown. I once panicked when this happened on the highway—I pulled over immediately, turned on the hazard lights, and later got help replacing the fuse, which solved the problem.
