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1998 Buick Century Grinding when anti-locks brake system eb

Tiny
STU PADAS
  • MEMBER
  • 1998 BUICK CENTURY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 105,000 MILES
When I put the car in gear, forward or reverse, it makes a clunk noise. When it snowed last I applied the brakes and the anti-lock brake system kicked in and it made a terrible grinding noise.
Is it the wheel bearing assembly?
Not a clue yet because I have not looked yet. Wanted to get ideas before I go there. Better to arm myself with knowledge before looking.
No error codes coming on for ABS system on dash either
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Thursday, March 4th, 2010 AT 1:29 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
The abs will make a lot of noise when it is actuated. Chances are that isn't the problem. As far as the noise you hear, check motor mounts / trans mounts to make sure they are good.

Let me know.
Joe
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Friday, March 12th, 2010 AT 1:32 PM
Tiny
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Thanks but this is not making normal ABS noise. Worked on my own brakes for over 20 years and never heard this before. It sounds like a loose tooth getting banged around by other teeth. That's why I asked about hub assembly. Could be the axle spindle at hub assembly end? When I apply brakes on slippery road the ABS kicks in and works/sounds fine on passenger side but on driver side it makes that sound like a gear throwing a piece of metal around(kinda like trying to switch gears and grinding instead.). When, from park, putting it in forward or reverse it makes a clunk sound on the same side, not sure if they are related.
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Friday, March 12th, 2010 AT 1:38 PM
Tiny
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Okay. I would think a wheel bearing would make noises all of the time, but that doesn't mean it isn't bad. The other item I question is the stator. If it is loose or the sensor is loose, the two could be hitting under a hard start. Check those things and let me know. And yes, it could be the bearing.
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Friday, March 12th, 2010 AT 8:08 PM
Tiny
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Thanks for the info.
Will be checking it tomorrow and will let you know what I find out.
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Friday, March 12th, 2010 AT 8:48 PM
Tiny
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I look forward to hearing from you.

Joe
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Friday, March 12th, 2010 AT 8:57 PM

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