E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking Forum by BimmerWorld

Suspension & Braking Forum by BimmerWorld
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!
Sponsored by BimmerWorld

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 01-25-2013, 01:25 PM   #1
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
Thumbs down #VibrationTrouble

So, I have been noticing a kind of low frequency vibration coming from the rear of my car.

To start off: my car is a 2002 325i A/T with 141k miles.

Symptoms: Low frequency vibration, seems to be coming from the back of the car. Can not be felt in steering wheel, usually behind you or sometimes under the seat. It is stronger under moderate to hard acceleration, but if it starts to rumble and I let off the throttle, the rumble goes away. It can be felt as a mild tremor under casual acceleration. It also seems to be worse after the car has been driven a mile or so after a cold start. The vibration is strongest from 25-35 mph in any gear and cannot be reproduced above 40mph. So it seems to be entirely speed dependent and load dependent.

Tentative speculation: I am guessing it has something to do with either a worn guibo, worn CSB, or both. I know that all my struts are worn and will be replaced soon but this doesn't sound like a strut problem. Also I don't believe it's a wheel and tire problem as this happened on an old set of tires as well but I can rotate them and see if the vibration follows the wheels.

Any other suggestions and advice? I have not gotten under to give the guibo and CSB a look yet, just so you know that as well.
SilverThreeTwoFive is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 01-25-2013, 01:28 PM   #2
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,465
My Ride: 2004 330Ci OBM
My car does this too at exactly those speeds. I can replicate it at 38 mph EVERY time I want to when the car is warm going up a slight incline. I believe mine is the guibo (hopefully not the CSB), but I haven't replaced it. That's really the only thing I can think of. My guibo looks fine and you can't really inspect the CSB, but I may just do both at once when I get the chance.

Last edited by WDE46; 01-25-2013 at 02:22 PM.
WDE46 is offline   Reply With Quote
Old 01-25-2013, 02:18 PM   #3
lcoleman
Registered User
 
Join Date: Mar 2007
Location: the barnyard
Posts: 2,458
My Ride: '79 Massey Ferguson
Shocks in the rear, not struts. Could be something along the driveshaft, or wheel bearings. Does it change when turning?
__________________
lcoleman is offline   Reply With Quote
Old 01-25-2013, 02:23 PM   #4
E46Moonlight
Registered User
 
Join Date: Oct 2008
Location: Bronx, NY
Posts: 2,597
My Ride: 2000 323i
Check transmission mounts and diff mounts. thats can cause the guibo and CSB to start acting up.
E46Moonlight is offline   Reply With Quote
Old 01-25-2013, 03:30 PM   #5
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
Yeah I know it's shocks in the back...I just didn't bother to differentiate them when I wrote it, lol. I don't believe it changes when turning which would kind of rule out bearings. I've also read that bearings don't typically start making noise under acceleration only. It also doesn't change pitch and get louder at higher speeds. It literally disappears above around 40mph. I talked to our BMW tech at the shop I work at and described the symptoms I wrote above and he concluded it was most likely a worn Guibo or CSB as well. He's been working on Bimmers for twenty years or so and he's nailed every problem my car has had so far so I'm gonna listen to him and check out the guibo. But while I'm down there I'll check the tranny and diff mounts. How do you suggest I check those, E46Moonlight?
SilverThreeTwoFive is offline   Reply With Quote
Old 01-25-2013, 03:37 PM   #6
E46Moonlight
Registered User
 
Join Date: Oct 2008
Location: Bronx, NY
Posts: 2,597
My Ride: 2000 323i
While under the car you could visually inspect them. See if there's any wear in them, if so replace. Cause if you get a new guibo and CSB with a bad trans mount the new guibo and CSB can wear way faster than normal
E46Moonlight is offline   Reply With Quote
Old 01-25-2013, 03:50 PM   #7
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
Cool. I'll check all that out! Thank you guys for your responses!
SilverThreeTwoFive is offline   Reply With Quote
Old 01-25-2013, 03:56 PM   #8
Solidjake
Zero. Oil. Leaks.
 
Solidjake's Avatar
 
Join Date: May 2008
Location: NYC
Posts: 23,030
My Ride: 2002 330i
Lmao, is this instagram that we need hashtags?
Solidjake is offline   Reply With Quote
Old 01-27-2013, 04:33 PM   #9
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
I rotated my tires today just for the hell of it. I don't remember the vibration happening on my old tire setup but it wouldn't be the first time I was wrong. So I'll drive it and report my findings. Hopefully I hear a vibration in the front now! How often can you say that?
SilverThreeTwoFive is offline   Reply With Quote
Old 01-28-2013, 12:05 AM   #10
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
Well, I rotated the tires and it seems like I have more vibration up front now than in the rear and that vibration is felt mostly in the steering wheel and more frontwards of the car now... Maybe it's something with the wheels and/or tires. I meant to say in my last post that I thought I remembered having this vibration/rumble with my old tires too. But it could be a bent wheel or something throwing it off combined with my old suspension allowing things to bounce and vibrate too much? I also got under and took a look at the guibo and it doesn't look to have any wear that I can see. No cracks in the plastic or anything. I wasn't able to look at the CSB as that would have involved more time. I'll drive it a few more days to make sure I'm really feeling a difference and not just going off of a confirmation bias or anything.
SilverThreeTwoFive is offline   Reply With Quote
Old 01-28-2013, 12:18 AM   #11
Gheybe
Registered User
 
Gheybe's Avatar
 
Join Date: Aug 2009
Location: San Diego
Posts: 10,189
My Ride: F80 M3
Came in here to make fun of you for putting "#" on your title.
__________________
Gheybe is offline   Reply With Quote
Old 01-31-2013, 07:43 PM   #12
bmwTuner1
Registered User
 
Join Date: Nov 2007
Location: LA, CA
Posts: 1,232
My Ride: Bmw, 330ci
Quote:
Originally Posted by Solidjake View Post
Lmao, is this instagram that we need hashtags?


Quote:
Originally Posted by Gheybe View Post
Came in here to make fun of you for putting "#" on your title.
__________________
Photobucket
bmwTuner1 is offline   Reply With Quote
Old 01-28-2013, 12:20 AM   #13
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
Haha, yes it was supposed to be funny.
SilverThreeTwoFive is offline   Reply With Quote
Old 01-28-2013, 12:45 AM   #14
MJLavelle
Registered User
 
Join Date: Jul 2011
Location: Charlotte NC
Posts: 2,753
My Ride: 2001 BMW 330ci
Vibrations within certain speed ranges can be caused by tires. Now, if the two of you who mentioned this in this thread have the same brand and model of tire, that would be perfect. But probably not.
First Gen Miatas were notorious for getting a vibration from 40-60mph with BFGoodrich tires.
My e46 came with General (XPS?) tires. They had a bad vibration below 40 mph. I really thought I had other suspension issues, but it went away completely when I put on Michelin PS2's.
But don't discount one of the more simple possibilities before digging in and buying parts.
MJLavelle is offline   Reply With Quote
Old 01-28-2013, 01:12 AM   #15
lcoleman
Registered User
 
Join Date: Mar 2007
Location: the barnyard
Posts: 2,458
My Ride: '79 Massey Ferguson
Most tire vibration is a balance or runout issue. Have them balanced. They should be able to tell you if your wheel is bent, just mention it.
Quote:
Originally Posted by MJLavelle View Post
First Gen Miatas were notorious for getting a vibration from 40-60mph with BFGoodrich tires.
The "60mph shimmy" is pretty notorious, regardless of tires. It's mostly a chassis issue; mine went away when I installed a roll bar.
__________________
lcoleman is offline   Reply With Quote
Old 01-31-2013, 01:42 AM   #16
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
Yeah, after driving the car a few days now after the tire rotation I really feel like most of what I was feeling is now in the front. It feels like there are more vibrations now in the steering wheel and the vibrations feel and sound to be coming more from the front. If I lean back towards the back of the car while I run through the 25-35mph range it doesn't seem to be making any low frequency noises in the back anymore. The tires are Kumho Ecsta AST's which are a cheap tire, I believe. I feel like it's a combo of a poorly balanced tire paired with my blown suspension components giving me vibration problems or something. I just got the last of the suspension pieces yesterday from Bavauto so it will have all new struts, SHOCKS, mounts, LCAB's, etc.. I will also have the wheels checked at work and see if it is off. Blah.... E46's do not seem to age well
SilverThreeTwoFive is offline   Reply With Quote
Old 01-31-2013, 11:38 AM   #17
HacksawMark
OEM ///Member
 
HacksawMark's Avatar
 
Join Date: Oct 2012
Location: Portland, OR
Posts: 1,101
My Ride: 2014 Subaru XV
Quote:
Originally Posted by SilverThreeTwoFive View Post
E46's do not seem to age well
Only if you don't maintain them and/or drive them that there's no tomorrow.
HacksawMark is offline   Reply With Quote
Old 01-31-2013, 11:44 AM   #18
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
I just bought it a few months ago with 137k miles. I'm not going to complain too much. It's still in pretty great condition. I've only had to fix the common problems so far. I'm just hoping my problem is a wobbly tire and worn suspension and not a guibo and/or CSB or something else. It's been expensive to get everything fixed but I love the car and when it's done it will feel awesome to have everything all buttoned up.

Last edited by SilverThreeTwoFive; 01-31-2013 at 11:45 AM.
SilverThreeTwoFive is offline   Reply With Quote
Old 01-31-2013, 11:45 AM   #19
330iPilot
Registered User
 
Join Date: Mar 2005
Location: Dallas, TX
Posts: 587
My Ride: Titanium Silver 330i
Any car at 141K is going to need suspension components replaced.
330iPilot is offline   Reply With Quote
Old 01-31-2013, 11:47 AM   #20
SilverThreeTwoFive
Registered User
 
Join Date: Sep 2012
Location: Pacific Northwest
Posts: 320
My Ride: 2002 BMW 325i
Agreed. That's why I've got all the new suspension parts sitting here on my bench at work!
SilverThreeTwoFive is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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 On
Censor is ON





All times are GMT -5. The time now is 03:29 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use