Friday, September 23, 2011

Which wheel has bad wheel bearing?

My wife's Malibu has a bad wheel bearing, pretty sure. It has a rapid tapping noise coming from the front, that gets louder as she goes faster. It sounds like it's coming from the driver side, but when the car turns right the noise almost completely goes away. And when the car turns left, the noise doesn't change. Does that mean that the right side is bad? Thanks.
Which wheel has bad wheel bearing?
Jack up the car and rotate the wheel to see if you can hear the noise. Wheel bearings usually make a grinding noise when they're bad. Check the tread to see if there's a pebble stuck in it.
Which wheel has bad wheel bearing?
Doesn't sound like a wheel bearing, sounds like a cv joint. Jack the side up you think is the problem and move the bottom of the tire in and out to see if you have any play, if you have play here it is your wheel bearing. Then put the car in neutral, with wheels scotched and rotate the wheel feeling for the tapping, this could be a cv joint.
Take a look at the CV axles. Could be a bad CV axle.
You are rite it is a wheel bearing and it is the left side that is bad as when you take pressure off the bearing it gets quiet,if it were a cv joint it would be constant and not change when turning.
Wheel bearings are a common problem on these malibus. But the diagnoses is really easy, if you know the trick. A CV joint will clunk and pop on accelerattion and usually decreases with speed, but a wheel bearing will increase noise with speed. Now to determine which side is bad, it's as easy as, which way do you turn when the noise decreases the problem is on that side. When the vehicle turns right, the vehicles weight shifts left, which unloads the right/passenger side, and the noise decreases. There is also a way to verify which side is the problem, by jacking the wheel just slightly off the ground and try to move it from side to side, and up and down. If the bearing is bad, you will feel the slop as you wiggle the tire. Hope this helps and good luck. Christopher

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