Grinding wheels - 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 06-08-2012, 11:16 AM   #1
Senior Member
Certified GM nut
Thread Starter
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Thanked 16 Times in 13 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default Grinding wheels

Last weekend, I got new tires and a realignment, and everything was great. The next day, I noticed that the town put new speed humps on Main Street, but not until I was on top of one at full speed. (They've since put up "raised sidewalk" signs.)

Since then, though, something near both of my front wheels has been intermittently grinding. Curiously, braking, steering, alignment, and handling are not affected one bit. Tires are too new to notice any abnormal wear patterns. Last I checked, I had a decent amount of brake pad left, and wasn't getting any "replace me!" squealing beforehand.

Turning and cornering don't change the sound much, if at all. If I apply the brakes, I hear a weird sound from my front passenger-side brake that sounds a little bit like whispering (psst-psst-pssst-pssst-psssst-psssst) as I slow down.

It mostly happens at lower speeds, but once I hit about 40 mph, it either goes away or is drowned out by wind noise until it decides to start doing it again. It'* most noticeable when coming to a stop while going downhill.

My guess is that I finished off the wheel bearings, but if I were so sure, I wouldn't be asking you guys.
SignOfZeta is offline   Reply With Quote
Old 06-08-2012, 12:09 PM   #2
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

I had a noise like that for several years and could not find the cause until I had to change the axle shafts due to torn CV boots, after which the noise went away. I doubt going over a speed bump could cause that though. If you think it might be a bearing, jack the front end up and feel for play in the wheels.

You could also take it back to the place that did the wheel alignment and tell them it never made this noise until after they worked on it. They probably wouldn't charge to take a look and see what the problem is.
2kg4u is offline   Reply With Quote
Old 07-03-2012, 02:01 AM   #3
Senior Member
Certified GM nut
Thread Starter
 
SignOfZeta's Avatar
 
Join Date: Mar 2005
Location: New Milford, CT
Posts: 2,284
Thanked 16 Times in 13 Posts
SignOfZeta has a spectacular aura aboutSignOfZeta has a spectacular aura about
Default

Update, before I forget! On the noisy passenger side, the outer pad is completely gone, and the rotor is terribly scored. On the other side, everything looks great, almost new. Either I warped that rotor, or the caliper is on the way out (which wouldn't surprise me; it'* the original one).

The noise is a combination of me running out of brake pad on that wheel, and the anti-lock system seeing that one wheel going too fast and kicking on the ABS.

I can't tell if ramming that bump caused this, or if it was happening for a long time, and the bump and noise are just coincidental, but I'm going to play it safe and order a new caliper tomorrow.

Are the two front calipers the same, or do I specifically need a front right caliper?
SignOfZeta is offline   Reply With Quote
Old 07-03-2012, 09:05 AM   #4
Senior Member

True Car Nut
 
2kg4u's Avatar
 
Join Date: Sep 2006
Location: Windsor, Ontario / Detroit, Michigan
Posts: 4,804
Thanked 220 Times in 181 Posts
2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of2kg4u has much to be proud of
Default

The caliper slide pins are probably seized. These are the bolts that anchor the caliper at the top and bottom of the caliper, and are only threaded for the first inch or so. The rest of the pin allows the caliper to slide and keep equal pressure on the inner and outer pads. When you have the pin/bolts out, clean them, clean out the hole they ride in, and make sure it is properly greased.

You don't necessarily need new calipers.
2kg4u is offline   Reply With Quote
Old 07-03-2012, 09:46 AM   #5
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,649
Thanked 1,001 Times in 777 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

Rockauto is showing 2 different part numbers for the L and R calipers.
Mike is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Wheels is wheels Darrbaby Classics (Star Chief and 1957 to 1986) 1 09-16-2010 10:28 PM
GXP with wheels other than the 18" GXP wheels? 1994se General GM Chat 5 01-19-2008 06:13 PM
Bonne wheels vs. GP wheels chadow427 General GM Chat 10 12-21-2005 03:59 PM
Nice clean wheels--Look behind the wheels BillBoost37 Your Ride: GM Pictures & Videos 18 08-16-2005 11:27 AM
Front end howling/grinding vital49 1992-1999 14 10-14-2003 02:08 PM


Tags
1997, axle, bonneville, brakes, cv joint, disc, grinding, hub, noise, pad, pontiac, rotor, se, tire, warp, wheel hub

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 04:57 PM.


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.