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Can You Continue Driving If the Radiator Fan Stops Working?

2 Answers

LeLaura

08/31/25 7:33am

If the radiator fan is not working, you should not continue driving. This can cause the engine to overheat. Continuing to drive with an overheated engine may lead to cylinder scuffing. Repairing a scuffed engine can be very costly. Methods to Diagnose Fan Failure: The most obvious sign of a car fan malfunction is an increase in coolant temperature. The fan's role is to dissipate heat from the coolant, so if the fan fails, it can cause the radiator to boil over, leading to coolant evaporation and overflow due to high temperatures. In severe cases, this may result in engine seizure or even total engine failure. Reasons Why the Fan Stops Working: Fan aging: Many modern engine fans are made of plastic, and the engine compartment is constantly exposed to high temperatures. Over time, this can cause the fan's components to deteriorate, leading to failure; Sensor signal interference: The fan operates based on signals from the coolant temperature sensor and refrigerant pressure sensor, which control its speed. If these sensors are affected by external factors and provide inaccurate signals, the fan's operation will be impacted; Relay issues: If the fan does not activate when the coolant reaches the required temperature, the relay may be faulty. Due to aging or other reasons, the relay may remain in an open state, preventing the fan from functioning properly.

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StEmilia

09/13/25 3:52am

I've been driving for twenty years and once encountered a situation where the radiator fan wasn't working. I stubbornly drove a few more kilometers to the repair shop that time, causing the engine temperature to skyrocket into the red zone - it nearly got scrapped and cost over 5,000 yuan to fix. The radiator fan is responsible for cooling; engine overheating can cause deformation or cylinder scoring. It's absolutely not recommended to keep driving, especially during summer or in traffic jams - the risk is extremely high. Pull over immediately, turn on hazard lights, and call a tow truck to take it to a professional shop for diagnosis. Possible causes include blown fuses, relay issues, or sensor failure. Regular vehicle inspections and maintenance can prevent such problems.

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