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Unread 12-05-2008, 09:03 AM   #1
gtospeeding
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Signs Of a Bad Wheel Bearing??

What are the symptoms of a bad wheel bearing?

I have a 97 cherokee and I hear grone from the front driverside wheel area
(sounds like road noise when someone has oversized tires on their truck) when the jeep is in motion . The faster I drive the louder it gets.

I think its a wheel bearing but when I took it to a mechanic to replace it he tells me the wheel bearing is fine , he then tells me the rotor and brake pads are whats making the noise.

Im no mechanic but the rotor explanation doesnt sound right to me

Their is no steering wheel shake when braking so I dont think its the rotor


any ideas?

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Unread 12-05-2008, 09:21 AM   #2
boondocksaint
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jack it up, and see if the wheel wobbles back and forth if you push it...
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Unread 12-05-2008, 09:23 AM   #3
Luckyduck
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Originally Posted by boondocksaint View Post
jack it up, and see if the wheel wobbles back and forth if you push it...
when you get it inspected this is how they check them, they put a bar under the wheel with the jeep jacked up and see if it moves
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Unread 12-05-2008, 09:31 AM   #4
gtospeeding
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Quote:
Originally Posted by boondocksaint View Post
jack it up, and see if the wheel wobbles back and forth if you push it...
push it how?

can you be more specific
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Unread 12-05-2008, 09:39 AM   #5
CharlieMopps
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Dude, he just told you what you thought was a $500 job is actually a $100-$150 job. Mechanics don't often save you money. I'd tend to believe him.

If you're wheel bearing were going (and I had one fail once) when you turn in a certain direction it will get louder. So, if you turn hard left or hard right it should get louder in one direction, but then seem to go away in the other, because you are either putting more stress on the failed bearing or taking stress off of it, depending on which way you turn.

If your pads have failed to the point that they are now laying against the rotor and ground goves into it... they could cause a lot of grinding to. (I've had this happen before as well) Once the pads ware through to the point that the rivets poke through, they start to grind groves into the rotor. Then the rives fail, the pad false lose against the rotor, and now you have a pad with metal spikes sticking out of it, laying against your rotor... even when you're not applying the brakes it's pretty loud.
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Unread 12-05-2008, 09:39 AM   #6
freshlikefruit
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put one hand at 12 oclock, one hand at 6, and rock the wheel with it jacked up. if there is any play, you have a worn bearing. dont place you hands at 9 and 3 because that type of play is a steering issue
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Unread 12-05-2008, 09:40 AM   #7
freshlikefruit
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its a pass or fail type of thing, easy check
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Unread 12-05-2008, 09:41 AM   #8
CharlieMopps
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Originally Posted by gtospeeding View Post
push it how?

can you be more specific
hes saying that if you push on the bottom of the tire it should not wobble. But really, your bearing would have to be REALLY bad for it to move. It could still be bad, even if you can't move it.
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Unread 12-05-2008, 09:43 AM   #9
freshlikefruit
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if there is no play, the bearing is fine
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Unread 12-05-2008, 09:43 AM   #10
Luckyduck
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Quote:
Originally Posted by gtospeeding View Post
push it how?

can you be more specific
i just told you how they do it in inspection stations
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1993 Ranger 2wd - dd
1999 wranger 2.5 - it gets used for something
1978 international scout - being built
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Bikes:2000 Ducati Monster 900: 2001 CBR 600 F4i: 1980 CB 900
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Unread 12-05-2008, 09:43 AM   #11
gtospeeding
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the pads have atleast 50% left on them and the rotor isnt grooved up
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Unread 12-05-2008, 09:44 AM   #12
freshlikefruit
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i would also spin the wheel in the direction of travel to see if the brakes do indeed make any noises
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Unread 12-05-2008, 09:46 AM   #13
gtospeeding
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if its not the bearing then whats making this groaning sound?
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Unread 12-05-2008, 09:47 AM   #14
freshlikefruit
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if it is the wheel bearing, i wouldnt be too worried. it is a unit part, easy driveway fix and they only cost about $100
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Unread 12-05-2008, 09:49 AM   #15
freshlikefruit
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is it a groan, or a howl? if it is more of a howl, then i would def say a wheel bearing
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