Stopping Vibration
Thread Starter
Instructor
Joined: Dec 2007
Posts: 238
Likes: 7
From: Ridgetop Tennessee
Stopping Vibration
I did a search but didn't see anything on this so here is my problem:
When I am stopping, especially while sitting in traffic, right before the C6 stops i feel a vibration. It is not coming through the steering wheel but I seem to feel it through the seat. The pulses are always the same duration regardless of the speed. I don't notice anything when coming to a complete stop from 15 mph and faster only when I am stopping from slow speed.
My C6 is as automatic, stock tires, wheels and brakes.
When I am stopping, especially while sitting in traffic, right before the C6 stops i feel a vibration. It is not coming through the steering wheel but I seem to feel it through the seat. The pulses are always the same duration regardless of the speed. I don't notice anything when coming to a complete stop from 15 mph and faster only when I am stopping from slow speed.
My C6 is as automatic, stock tires, wheels and brakes.
Burning Brakes
Joined: Sep 2005
Posts: 1,208
Likes: 2
From: Long Beach CA
Does it feel kinda like a bucking motion with light brake pressure? Your rotors are most likely slightly warped thats why you dont feel it in the steering wheel. Most of the time its just the frt but it can be both frt and rear.
Le Mans Master
Joined: Jan 2001
Posts: 6,446
Likes: 371
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
It sounds like brake pad material build up on your rotors. On an open road run up to about 90 and do about 3 hard stops. That will probably wear off the pad build up and fix your problem.
Tom
Tom
Thread Starter
Instructor
Joined: Dec 2007
Posts: 238
Likes: 7
From: Ridgetop Tennessee
I do hard stops on a regular basis, so that is not it, also there is no squealing.
It is not warped rotors because the pulses are 5-6 per second and the car only moves about a foot. I can almost make it vibrate sitting still.
Thread Starter
Instructor
Joined: Dec 2007
Posts: 238
Likes: 7
From: Ridgetop Tennessee
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Michael S. Palmer
CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
It's extremely unlikely you have 'warped' rotors. Certainly try bedding your brakes. I wouldn't just go up to 90 and slam on your brakes....here's a link with information on how to properly bed your brakes:
http://www.zeckhausen.com/bedding_in_brakes.htm
Inspect the rotors on both sides looking for build-up, scoring and possibly even cracking. You might try scrubbing your rotors with a red (delicate) Scotch Brite pad and possibly use some disc cleaner as well. If you see 'excessive' buildup on your rotors you may have glazed your brake pads (although I think you'd notice that at higher speeds as well).
Ultimately, if the problem persists, take it to the dealership. Good luck.
http://www.zeckhausen.com/bedding_in_brakes.htm
Inspect the rotors on both sides looking for build-up, scoring and possibly even cracking. You might try scrubbing your rotors with a red (delicate) Scotch Brite pad and possibly use some disc cleaner as well. If you see 'excessive' buildup on your rotors you may have glazed your brake pads (although I think you'd notice that at higher speeds as well).
Ultimately, if the problem persists, take it to the dealership. Good luck.
Le Mans Master
Joined: Oct 2007
Posts: 6,149
Likes: 11
From: Greater Detroit Metro MI, when I'm not travelling.
I would try to bed in the rotors and pads again (several hard stops followed by a cool down period while driving) to see if that solves the problem.
