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Any wear or play in a bush or rod usually gives a 'knock' or causes vibration, not a humming noise.
If there's play in the steering wheel that may be due to a worn steering rack and pinion.
A worn ball joint can cause a 'crack' noise and depending on the wear, vibration that will be felt through the steering wheel. A worn ball joint can also cause the car to pull to one side.
A humming noise suggests it is either a brake rotor/pad, or a worn driveshaft or wheel bearing.
The most common reason for a humming noise in the front area of your car would be a wheel bearing noise. I would start by having the wheel bearings checked.
There are two ways to check the bearings, one would be to jack wheels of the ground and check for free play in wheels, the other would require having a tech test drive the car, a good test drive by a tech can tell you if it is a wheel bearing problem.
A wheel bearing noise will get louder as the speed increases and the tone will change if the wheel is turned left or right. You can try this test yourself, get car up to speed of noise and then listen as you turn wheel to left and then right and if the tone changes then i would suspect the bearing and next step is to find out which one, this would need to be done on a lift. good day
Possibly a wheel bearing issue, does it `get progressively worse as speed increases or better as it decreases? does it stop when applying the brakes or get worse?
Hello. It could be the beaing or it could be the tire itself. Get it up in a rack to push and pull on the tire to check the bearings. IF it doesn't move around, it could be the tire. Rotate that tire to the spare or to the rear and check that out. J.
may be a wheel bearing.. when driving down the road try slightly turning your steering wheel back and forth like your changing lanes..if the pitch of the noise changes theres a good chance thats your problem.
Wheel Hub Assemblies: Systems and Diagnosis of Worn Hub Assemblies & Bearings
Front wheel hub assemblies and bearings control the position of, and reduce the resistance of, vehicle wheels in contact with the pavement. When they fail, front wheels may not be kept in position and vibration and noise usually develop. Symptoms that normally develop as a result of these worn parts include:
A humming, rumbling or growling noise which increases with acceleration or as the vehicles turns
Vibration felt in the steering wheel, which changes with vehicle speed or as the vehicle turns
Looseness or excessive play in the steering wheel (especially while driving over rough road surfaces)
A loud, constant grinding noise when driving the vehicle (heard in the most severe cases of a wheel bearing failure)
Pulling to one side when braking.
Roughness - with the vehicle of the ground, roughness or vibration when rotating the wheel
Looseness - with the vehicle off the ground, looseness when wiggling the wheel back and forth (Looseness may also indicate a worn ball joint)
Excessive brake pedal play can also indicate sloppy or excessively loose wheel bearings
ABS failure in the system may be related to failure of the ABS sensor in the hub assembly or the internal sensor in the wheel bearing
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