What is the reason for one radiator fan spinning and the other not spinning on a Fit?
3 Answers
The reasons for one radiator fan spinning and the other not spinning on a Fit: 1. The coolant temperature has not reached the required level: Most modern car radiator fans operate using electronic temperature control, so the fan typically only starts spinning normally when the coolant temperature reaches the specified level. If the temperature is too low, the radiator fan will not spin. Therefore, if the car radiator fan is not spinning, the first thing to check is whether the coolant temperature has reached the required level. 2. Relay malfunction: If the coolant temperature is appropriate but the car radiator fan still does not work, the issue might be with the fan relay. If the relay is faulty, the car radiator fan will not operate. 3. Temperature control switch problem: If the above two aspects are not the issue, then it is necessary to check the temperature control switch. Sometimes, faults can occur in this component, which can affect the operation of the car radiator fan. Therefore, this should also be inspected carefully.
I noticed that one of the Fit's radiator fans is spinning while the other isn't, which is usually caused by several common reasons. The individual fan motor itself might be faulty, such as internal short circuits or jamming; the relay or fuse controlling the fan may have blown, affecting only one of them; loose, oxidized, or damaged wiring connectors could interrupt the signal; a faulty cooling system control module might mistakenly think the temperature has been reached but only trigger one fan; or it could be a sensor issue, like an inaccurate reading from the coolant temperature sensor. I recommend starting with the basics: first, check the fuse box for the corresponding fan's fuse and use a multimeter to test the power supply. If that doesn't work, inspect whether the plugs and wiring are secure. DIY repairs might be troublesome, so it's best to take the car to a 4S shop or a professional repair shop to avoid engine overheating and seizing. Remember, if this issue is left unresolved for too long, it could affect air conditioning performance or even damage the engine, so don't ignore timely repairs.
I've encountered a similar situation before. When driving my Fit, only one cooling fan was spinning while the other remained stationary. Initially, I thought the motor was faulty and needed replacement, but upon inspection, I found that a blown fuse had cut power to one side. After cleaning the connector, normal operation was restored. Another time, it was caused by burnt relay contacts or aged wiring. Errors in the fan control module or faulty sensor readings can also cause the system to activate only one fan. For non-professionals, I recommend against random disassembly: first try restarting the vehicle and observe the fan response; if that doesn't work, seek professional diagnosis immediately. Don't underestimate this issue - poor cooling can cause engine temperatures to spike, potentially leading to breakdowns or component damage while driving, compromising safety. Regular radiator cleaning and scheduled maintenance can help prevent such failures.
