Why is one Honda fan spinning while the other is not?

1 Answers
CoraLynn
07/30/25 3:34am
Honda fan one turns one does not turn can use a multimeter and test light to first check whether the radiator fan has power and whether the grounding is normal. If the grounding is normal and there is power, then the radiator fan motor is faulty. If there is no power, you can check whether the radiator fan relay and the fuse in front of it are normal. Here is some extended information: 1. Function: The car fan blows towards the radiator to cool the radiator and dissipate heat from the engine. It cannot blow towards the engine, as this would increase the engine temperature. The fan is installed behind the radiator and is coaxial with the water pump. When the fan rotates, it creates suction on the air, accelerating the airflow along the axial direction, thereby speeding up the cooling of the coolant flowing through the radiator core, while also cooling the engine body shell and surrounding accessories. 2. Principle: The car fan is installed behind the radiator (on the side close to the engine compartment) and pulls air in from the front of the radiator when turned on; however, some models have the fan installed in front of the radiator (on the outer side), blowing air towards the radiator when turned on. The fan starts or stops automatically based on the water temperature. When the vehicle speed is high, the air pressure difference between the front and rear of the vehicle is sufficient to act as a fan, maintaining the water temperature at a certain level, so the fan does not need to work at this time.
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