There are various possible reasons why a car makes a humming or whirring noise as these sounds could be a sign of a bad bearing in the steering system, water pump or alternator. Faulty air conditioning systems may make a similar noise as well, especially if there is a problem with the serpentine belt, which can get stretched and worn out. The tensioner may malfunction as well and defective air conditioners usually have more of a buzzing noise, particularly when the system is overcharged or when liquid refrigerant enters the compressor.Continue Reading
Cars make other similar noises when a part is malfunctioning. If a car starts to make a low drone sound, much like the sound of someone blowing across the top of a soda pop bottle, this could be a sign of the motor mounts or exhaust system being worn out.
Suspension failures will make a low groaning noise, and a bearing failure in the engine or a flat tire are known to cause a loud roaring noise. Muffle rumbling noises usually stem from when a car drives across warning tracks on a highway. Mufflers can also make this type of noise. Cars can also make a high-pitched whining noise, and this may stem from problems with the air conditioning, mismatched gears in the transmission or not enough lube in the manual gearbox. Cars can make more types of sounds when a problem occurs. When in doubt, it's recommended to take a car to a certified mechanic to find out if there are any issues that need to be fixed.Learn more about Car Parts & Maintenance
When power steering makes a high-pitched noise, either the power steering fluid is low or the power steering pump is bad. It is usually difficult to turn the wheel of a car when there is a power steering problem. Although it is a less common problem, if there is a clicking sound when the wheel is turned, this indicates there is most likely a problem with the wheel bearing.Full Answer >
The purpose of a car water pump is to push coolant through the car's engine block, radiator and hoses to get the engine heat away from the system. Most frequently, the water pump drives off the crankshaft pulley or the crankshaft itself. The coolant that gathers between the impeller blades travels outward using centrifugal force, and suction draws the coolant into the water pump from the radiator.Full Answer >
Replacing a car water pump involves draining the car's cooling system, accessing and removing the old pump from the engine, preparing the engine block for the new pump and fitting a replacement pump in the place of the old one. You need a replacement pump that suits your car's model and engine size.Full Answer >
A car owner will know if the car's water pump is leaking if the cooling system constantly loses coolant. Another indication of a leaky water pump is an overheating engine.Full Answer >