What are the signs and symptoms of a bad radiator fan?
Just like every other issue that occurs in a vehicle, there are a few symptoms that indicate a lousy radiator cooling fan. Hence, if you notice any of these
symptoms, you have to inspect or call for professional assistance to thoroughly inspect your radiator fan.
1. Fan not coming on
The most common bad cooling fan relay symptom is that the cooling fan will not come on. If the electric motor fails or burns out, which is usually the case,
the fan will not work. This is because the electric fan motor works together in harmony with the fan blades to pull air through the radiator fins.
2. Blown radiator fan fuse
A blown radiator circuit fuse is another symptom of a failing or lousy radiator fan. If the electric motor surges or fails, it will blow the cooling fan circuit fuse to
keep the rest of the system safe from any electrical surge. The blown fuse will have to be changed for the radiator fan to start working.
3. Temperature warning light
The temperature warning light indicates a problem in the cooling system. Whether or not you’re driving and this pops up on your dashboard, you have to shut
off the car and allow it to cool to prevent overheating. Chances are, the temperature warning light pops up because you have a failing or lousy radiator fan.
4. Poor A/C performance
If you notice the radiator fan not working when AC is on, you should seek professional advice. A lousy radiator fan can create car air-conditioning (AC)
issues. This is because the radiator cooling fan creates double the amount of air that the condenser fan. The radiator fan pulls air through the condenser,
which removes the heat vapor of the refrigerant inside. If the radiator fan fails, it will affect the AC performance.
5. Vehicle Overheating
Engine overheating, a typical bad radiator symptom, occurs whenever there is a problem with the cooling system. Electric radiator fans are designed to come
on once certain conditions are met, or a specific temperature is reached. If the radiator fan fails, the engine temperature will continue to rise until the engine
overheat. Since engine overheating is a common problem with the cooling system and can be caused by various problems, you have to diagnose or contact
a professional mechanic to track down the cause of the overheating.
6. A loud whirring Noise
In some cases, when the radiator cooling fan motor fails, you’ll notice a loud clicking or whirring noise that changes as you rev your engine. The radiator
cooling fan is sensitive and works together in harmony with the blades, and if one of them goes out of place, it might come in contact with other components
and vibrates. When the fan clutch begins to fail, it will cause an embarrassing whirring noise. Bad radiator fan noise might be so loud, but fixing it on time will
save you from the expensive repair costs.
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