Vibration Under Acceleration - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 02-23-2009, 12:44 PM   #1
Junior Member
Thread Starter
 
Join Date: Feb 2009
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Alford is on a distinguished road
Question Vibration Under Acceleration

I'm new as far as posting. I've followed this Forum for quite a while and found it both helpful and interesting. I have a 2000 Bonneville with 204K that I handed down to my daughter. It has a bad vibration under acceleration only. Smooth as new while coasting. Vibration starts @ 45 plus mph. I replaced the tires, outer tie rods, right lower control arm, and left front transmission mount. No change what so ever. Front wheel movement is very slight and about equal when checking for side to side or up and down play. Right drive axle has about twice the end to end movement as the left. Should there be any movement end to end? I read through all the previous threads and didn't see anyone with the same problem, unless I missed it. Can anyone shed some light on this for me?
Alford is offline   Reply With Quote
Old 02-23-2009, 12:49 PM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Does this vibration get worse when braking?
Danthurs is offline   Reply With Quote
Old 02-23-2009, 03:37 PM   #3
Junior Member
Thread Starter
 
Join Date: Feb 2009
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Alford is on a distinguished road
Default VIbration Under Acceleration

No. It doesn't vibrate while coasting, braking, or even turning. Even at high rates of speed it'* fine unless you are giving it more power. The vibration gets worse with speed, but only under power. Goes away completely as soon as you let off. I'm not a professional mechanic, but there isn't much that I haven't done. However, this one really has me stumped.
Alford is offline   Reply With Quote
Old 02-23-2009, 04:03 PM   #4
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

You will want to check yoru axels for play. Billboost has a write up on checking the suspension. I'll see if he can get that finished for posting.
Danthurs is offline   Reply With Quote
Old 02-23-2009, 04:16 PM   #5
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

It'* finished for what is needed here Dan. But that write up only covers balljoints, tie rods and wheel bearings.

If the issue is only accelerating, have you checked the front motor mount? The 2000+ has a common failure of the front mount.

When you say the axle has play..how do you mean that, it should be held solidly to the wheel hub and connected firmly into the trans leaving only a little play in the center of the shaft.
BillBoost37 is offline   Reply With Quote
Old 02-23-2009, 04:49 PM   #6
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

I suspect his axle. The one that he said has the play.
Danthurs is offline   Reply With Quote
Old 02-24-2009, 08:39 AM   #7
Junior Member
Thread Starter
 
Join Date: Feb 2009
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Alford is on a distinguished road
Default

Thank you Dan and Bill for your replies. I replaced the hydraulic tranny mount near the radiator. I do believe the engine still has too much movement when torqued. Which mount were you referencing? The one by the pulleys? As far as the axle play; I can move the shaft on the right side about 1/4 inch toward the tranny housing and back toward the bearing assembly. The left shaft only moves about an 1/8 inch. However, there is no movement up and down or front to back on either shaft. This has been the best car I have ever owned. I have only had to replace the crank sensor, oil sender, and cooling fan motor in 204K miles other than routine maintenance. I am planning to work on it again this weekend. I appreciate any advice you have to give.
Alford is offline   Reply With Quote
Old 03-05-2009, 09:37 AM   #8
Junior Member
Thread Starter
 
Join Date: Feb 2009
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Alford is on a distinguished road
Default

Gentlemen,
It was the drive axles. The tri-pots had some slight wear, but the bearings were all ok. I can't believe that little bit of wear resulted in such a noticable vibration. Replaced left and right with new not remans for $125. Just wanted to follow up for anyone who might have this issue in the future. Thanks for your help!
Alford is offline   Reply With Quote
Old 03-05-2009, 10:11 AM   #9
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Not a problem at all. If you need anything else, just ask.
Danthurs is offline   Reply With Quote
Old 03-15-2009, 08:55 PM   #10
Junior Member
 
Join Date: Mar 2009
Location: Greensboro, NC
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
e-money81 is on a distinguished road
Default

Hey guys, I'm new to the forum. I just purchased an '01 SSEI the other day. This is the 2nd one that I've owned, but the I didn't own the 1st one for very long, so I'm still a rookie owner. Anyways, I'm having the exact same problem. I noticed the car vibrates a good amount at highway speed, but subsides when I let off the gas. Also, I can feel some vibration through the brake pedal when I'm waiting at a light. I was thinking it might be a motor mount, but could it be what Alford was going through? I'd appreciate any feedback about what to check.
e-money81 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Vibration under light acceleration-Help!! Bonneville'n 2000-2005 3 04-01-2010 11:33 PM
Hard shift - weird acceleration vibration benjabro 2000-2005 13 02-23-2009 06:41 PM
A/C problem ... Airflow decreases under acceleration JCurtis 1992-1999 15 07-08-2005 11:57 AM
shuttering / vibration during acceleration. RolandGS 1992-1999 5 01-10-2005 01:59 PM
VIOLENT shaking from font end under acceleration *FIXED!!!* modifiedSSEi 1992-1999 12 04-09-2004 09:41 AM


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 10:56 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.