Why is my engine cooling fan so loud?
One such problematic issue, the excessively loud radiator cooling fan, is a common plague many automobile owners will experience. Your radiator fan should be audible. Worn bearings, bent or broken blades, and unbalanced rotating assemblies can cause a fan to screech, howl, or otherwise make noises it shouldn’t.
Why does my BMW make a loud fan noise?
BMW tells me they have had problems with some of the 5 Series fan motors. A: This sounds like your fan might be running at maximum speed in an attempt to prevent overheating. If your coolant temperature is normal, there may be a problem somewhere in the cooling system giving the control module bad info.
What does a failing radiator fan sound like?
Q: What does a bad radiator fan sound like? In some cases, when your radiator cooling fan clutch fails, it will develop a whirring or clicking noise. The noise could result from a bearing that is out of place or a bent fan blade that is touching other components.
Why does my engine sound like a fan when I accelerate?
A loud squeaking or squealing noise while accelerating could mean there’s a problem with your engine belt. It could mean the belt’s loose or worn. Or it could mean that one of the belt’s pulleys is starting to fail. A loud rumbling noise when accelerating might suggest there’s a problem with your exhaust system.
How can you tell if a fan clutch is going bad?
To confirm the diagnosis, start with this simple test: Spin the fan as hard as you can on an engine that has not been started that day. If the fan rotates more than five times, you can bet the clutch is bad. You should feel some resistance and the fan may spin up to three times, depending on the ambient temperature.
Why does my car get louder when I accelerate?
This noise most often happens when you first begin to accelerate, and sometimes when turning. Belt noise can mean the belt is worn or loose. Belt noise can also come when one of the pulleys the belt is riding on starts to fail. With an exhaust leak, the muffling of the noise is cut short, making the noise louder.
What does a bad radiator fan sound like?