Trouble identifying noise in front end...probably hub? - 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 09-10-2007, 05:35 PM   #1
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Oct 2005
Location: Alexnandria MN
Posts: 108
Thanks: 0
Thanked 0 Times in 0 Posts
kobrak is on a distinguished road
Default Trouble identifying noise in front end...probably hub?

Folks, howdy! I need some help identifying a noise that I think is a LF hub going bad, but I have never had one go bad before. The noise doesn't start until I'm going about 35mph and I can make it change pitch or have it go away when I act like a nascar start where you warm the tires ie........move the wheel back and forth loading and unloading the tire to the left and right. The noise sounds like a whirring or a fan blade that is out of balance. I know kind of a crappy description, but that is the best I can do. I took both front wheels off and although it seems to have just a bit off movement when pushing up and down, there is nothing visually I can see. The RS front wheel/hub doesn't have this movement? Anything else I should check?
kobrak is offline   Reply With Quote
Old 09-10-2007, 08:58 PM   #2
Senior Member
Posts like a Turbo
 
Join Date: Sep 2007
Location: Saginaw, MI
Posts: 345
Thanks: 0
Thanked 0 Times in 0 Posts
TheDude is on a distinguished road
Default

Definately sounds like a hub bearing. There is a real easy way to check which side. Raise the front end of the vehicle off the ground. Put the car in neutral (make sure you either pull the parking brake or block the rear wheels) and spin the front wheels by hand. Put you other hand on the coil spring and feel for any grinding in the spring. The side that has the grinding feeling in the spring is the side with the bad bearing.
TheDude is offline   Reply With Quote
Old 09-11-2007, 08:31 AM   #3
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 does sound like a bad bearing. Does the sound change with speed?
BillBoost37 is offline   Reply With Quote
Old 09-11-2007, 07:58 PM   #4
Senior Member
Posts like a 4 Banger
Thread Starter
 
Join Date: Oct 2005
Location: Alexnandria MN
Posts: 108
Thanks: 0
Thanked 0 Times in 0 Posts
kobrak is on a distinguished road
Default

The sound does get a bit worse the faster I go. I did throw the car in neutral today to make sure it wasn't tranny related. I'll try the grab the strut deal to see if I can feel a differnence. but I think becuase it doesn't really make any noise until I hit about 30, I might not feel it?
kobrak is offline   Reply With Quote
Old 09-11-2007, 09:32 PM   #5
Senior Member
Posts like a Turbo
 
Join Date: May 2007
Location: Sycamore, IL (ILRt. 64 and ILRt. 23)
Posts: 303
Thanks: 0
Thanked 0 Times in 0 Posts
01BonneSC is on a distinguished road
Default

Yup, the good ol invisible airplane. First time I heard a bad bearing, it was a Focus, I thought I was getting dive bombed. Sounds like its not worn enough until the bearing reaches bearing speed. What ever side makes the most noise when you shift the weight of the car back and forth, like you were playing nascar, is the side thats bad.
01BonneSC is offline   Reply With Quote
Old 09-11-2007, 10:04 PM   #6
Senior Member
Posts like a Turbo
 
Join Date: Sep 2007
Location: Saginaw, MI
Posts: 345
Thanks: 0
Thanked 0 Times in 0 Posts
TheDude is on a distinguished road
Default

I have had many vehicles that have had bad wheel bearings and NEVER made a noise. Putting your hand on the spring is the best way that I know of to tell which side it is. If it is humming then you will feel it in the spring. I just put one in a 01 Grand Prix yesterday and you could barely hear the hum. As soon as I put it on the hoist and spun the left front wheel I could feel the grinding in the spring. Trust me, its a fail safe method.
TheDude is offline   Reply With Quote
Old 09-11-2007, 10:17 PM   #7
Senior Member
Posts like a Turbo
 
Join Date: May 2007
Location: Sycamore, IL (ILRt. 64 and ILRt. 23)
Posts: 303
Thanks: 0
Thanked 0 Times in 0 Posts
01BonneSC is on a distinguished road
Default

Quote:
Originally Posted by TheDude
I have had many vehicles that have had bad wheel bearings and NEVER made a noise. Putting your hand on the spring is the best way that I know of to tell which side it is. If it is humming then you will feel it in the spring. I just put one in a 01 Grand Prix yesterday and you could barely hear the hum. As soon as I put it on the hoist and spun the left front wheel I could feel the grinding in the spring. Trust me, its a fail safe method.
Musta had all "quiet" bearings in... as far as the 01 GP how did they know they were having a wheel bearing going out if they couldnt hear it? They dont make much noise when they first start out, and you can go for a while with out it locking up or being much of a problem besides lower MPG and annoiance.
01BonneSC is offline   Reply With Quote
Old 09-11-2007, 10:24 PM   #8
Senior Member
Posts like a Turbo
 
Join Date: Sep 2007
Location: Saginaw, MI
Posts: 345
Thanks: 0
Thanked 0 Times in 0 Posts
TheDude is on a distinguished road
Default

I have no explanation for the bearing that wernt making the humming noise. 95% of them make a hum when they go bad. The one instance was on a 03 2500 Suburban. I drove the vehicle with the customer and NEVER heard a hum. Thats is when I never suspected a wheel bearing. He was getting a slight clunk noise when going over 30mph and turn the wheel ever so slightly to the left (as in changing lanes). But I didnt do it all the time. After wasting more than a half hour checking out a bunch of other stuff, I grabbed ahold of the tire and shook it. There was more than a half inch of play in the bearing. This thing was ready to fall off!!! These cases are few and far between though. The lady woth the GP wasnt too sure what kind of noise she was hearing. She said it was a whinning noise (the trannys whin real bad on GP'*). I droeve the car and heard the differnt noises and diagnosed it as the wheel bearing. She had no idea. It had apparently recently started because it didnt trip the ABS light yet.
TheDude is offline   Reply With Quote
Old 09-11-2007, 10:28 PM   #9
Senior Member
Posts like a Turbo
 
Join Date: May 2007
Location: Sycamore, IL (ILRt. 64 and ILRt. 23)
Posts: 303
Thanks: 0
Thanked 0 Times in 0 Posts
01BonneSC is on a distinguished road
Default

Quote:
Originally Posted by TheDude
The lady woth the GP wasnt too sure what kind of noise she was hearing. She said it was a whinning noise (the trannys whin real bad on GP'*).
I knew Bonnes were better than GP'* our trans'* dont "whine" about it when we jump in the go pedal. HAHA ok back on task......
01BonneSC is offline   Reply With Quote
Old 09-12-2007, 10:12 AM   #10
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

Dude...you are aware that since 97 we have the same transmissions as GP'* right? One shouldn't whine more than another.

As for the bearing.. this sounds like it'* a typical bearing failure. As Dude mentions there are a few non typical failures that can lead us round and round until we discover the issue.
BillBoost37 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Annoying chirping noise coming from front end... anthonyv62 1992-1999 10 06-13-2017 03:39 PM
92-95 to 96-99 front end & rear end conversion fbodyNATION Pontiac Bonneville 1 10-20-2011 07:41 AM
Trouble, trouble, trouble jbmark33 2000-2005 25 05-22-2007 10:11 PM
Front End Making Horrible Noise and Vibration realjwann 1992-1999 6 01-14-2005 04:00 AM
Wierd noise in front end , and ABS question 97SSE 1992-1999 4 12-16-2004 11:59 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 10:01 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.