Hi-speed wobble while braking - Bearings????? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-15-2004, 12:41 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Oct 2003
Location: Dallas
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
rnbraud is on a distinguished road
Default Hi-speed wobble while braking - Bearings?????

My 95 Bonnie will wobble and shake like crazy when I lightly tap the breaks while going down the highway arout 50-60 mph. At slower speeds there is a grabbing or lunging sensation when comming to a stop.

Now I have read all of the posts on this subject which point to warped rotors. I have in fact replaced the rotors during the last brake job. It still wobbled some after the replacement. I brought them to another store to have them cut, but the guy would cut them since they had no wear, the were brand new, and his measurments showed no warpage or runout.

If it isn't the rotor causing the problem, what else could it be? Could it be the bearings or the spindle? Woouldn't that cause a wobble all the time? Could the rotor be warped only when bolted on the car? How do I check that?

Any magic potions or spells would be greatly appreciated.

Later.
rnbraud is offline   Reply With Quote
Old 07-15-2004, 12:50 PM   #2
Senior Member
Posts like a Northstar
 
Join Date: Feb 2003
Location: Mount Vernon, Ohio
Posts: 530
Thanks: 0
Thanked 0 Times in 0 Posts
con10der is on a distinguished road
Default

Could be a number of things...Ball joints, tie rod ends, center link...etc etc...I woudn't suspect wheel bearings until the steering/suspension is looked at first...

Try jacking front end up (both wheels off ground) and while grasping each tire (individually) check for excess play...in all directions..

Good Luck.....
con10der is offline   Reply With Quote
Old 07-15-2004, 01:18 PM   #3
Senior Member
Posts like a Corvette
 
Join Date: Jan 2004
Location: Montréal, QC
Posts: 1,374
Thanks: 0
Thanked 0 Times in 0 Posts
Foghorn is on a distinguished road
Default

Warped front brake rotors or rear drums. Did you clean and lubricate the caliper slides when you replaced the pads and rotors? The lunging you describe when coming to a stop is a typical description off out of round rear drums.

Cheers,
Foghorn is offline   Reply With Quote
Old 07-15-2004, 02:00 PM   #4
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Oct 2003
Location: Dallas
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
rnbraud is on a distinguished road
Default

Willl do on both suggestions.

Hadn't checked the rear brakes yet. Never seemed to give me a problem.

Will post my resutls.

Later.
rnbraud is offline   Reply With Quote
Old 07-19-2004, 12:06 PM   #5
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Oct 2003
Location: Dallas
Posts: 32
Thanks: 0
Thanked 0 Times in 0 Posts
rnbraud is on a distinguished road
Default

Well, took the wheels off this past weekend and brought the rotors in for re-surfacing. The guy at Oriellys notiiced a slight "bulge" on one of them. When I came back to pick them up, they told me their machine was on the fritz. Seems the machines "nylon" bushings had worrn out. So, I am out of luck till next weekend.

Anyway, I didn't notice anything wrong with the hub. Seemed tight and not much play. The only thing I did notice was the rotor has about 1/4 inc play back and forth on the hub. But is is centered on the hub so this should be a problem once the tire is in place and tightented, right?

Also, one of the slides on one of the calipers was a llittel tight. I had cleaned them up last time and put new grease. THey ride in a rubber bushing of some kind. Maybe that bushing has worn out or aged. Can they be easly replaced.

More to come after the weekend.

Thanks.

P.*. Haven't checked the rear brakes just yet. Will do next weekend.
rnbraud is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Thumping noise from right rear while braking. unclemic 1992-1999 4 01-24-2008 10:24 AM
Hard to steer while turning left while braking erin0525 2000-2005 9 12-11-2007 09:31 PM
Car pulls to the left while braking Andrew97Cobra 1987-1991 10 09-21-2006 02:29 PM
94 SSEi : Clunking while braking Jim W 1992-1999 4 09-06-2005 10:53 PM
High speed wobble? SSEimatt93 Lounge 4 12-31-2004 04:30 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:32 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.