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 > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-04-2016, 05:52 PM   #1
LittleBear
Registered User
 
Join Date: Mar 2008
Location: Brklyn. Got a Problem wit dat?
Posts: 789
My Ride: 2001 330i
Alternator Question, pls...

Hello BMW Experts!

Does anyone think an alternator can cause a small car vibration at ~ 78 to 82 mph or so?

TIA! Murf
Attached Thumbnails
Click image for larger version

Name:	P6171302.jpg
Views:	29
Size:	104.6 KB
ID:	636034  
__________________
"The Indian smiles, he thinks that the cowboy is his friend. The cowboy smiles, he is glad the Indian is fooled. Now he can exploit him"
LittleBear is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 07-04-2016, 05:58 PM   #2
cirrusblau
Registered User
 
Join Date: Jul 2015
Location: Toronto, Canada
Posts: 15
My Ride: 2001 330i
It'd be small, that's for sure. I really doubt you'd notice any vibration unless something was seriously damaged (missing several cooling fins, perhaps).

Since it's roadspeed related, I'd focus on wheels and driveshaft. At 78-82 mph, try shifting to neutral or stepping on the clutch. If the vibrations continue, it's something in the drivetrain.
cirrusblau is online now   Reply With Quote
Old 07-04-2016, 06:21 PM   #3
LittleBear
Registered User
 
Join Date: Mar 2008
Location: Brklyn. Got a Problem wit dat?
Posts: 789
My Ride: 2001 330i
Hi Circus,
The vibe is small, but is the same with either summer or snow wheel/tire sets. I've had it a while, changing tierods, alignments also.
Driveshaft is my second guess (but what do I know...)!

Murf
Attached Thumbnails
Click image for larger version

Name:	P8011013.jpg
Views:	23
Size:	180.2 KB
ID:	636037  
__________________
"The Indian smiles, he thinks that the cowboy is his friend. The cowboy smiles, he is glad the Indian is fooled. Now he can exploit him"
LittleBear is offline   Reply With Quote
Old 07-04-2016, 06:31 PM   #4
cirrusblau
Registered User
 
Join Date: Jul 2015
Location: Toronto, Canada
Posts: 15
My Ride: 2001 330i
Try putting it into neutral like I said, if the vibration continues, it's the quite likely to be the drive shaft, especially since you've swapped wheels and it's still there.
cirrusblau is online now   Reply With Quote
Old 07-04-2016, 10:22 PM   #5
jmo69
Registered User
 
Join Date: Mar 2013
Location: Wisconsin
Posts: 1,200
My Ride: 03 325xi 98 328is
I had a new alternator with a bad bearing and it was just noisy, no vibrations that I remember, how about motor mounts pulleys or a chunk out of a fan blade.
__________________
Hers His
2003 325xi StahlGrau metalic almost modless, just lots of new parts, wife's DD. 1998 328is lowered, X-brace, Sparco strut brace, HIDs, AEs, almost everything blacked out, my DD.
jmo69 is offline   Reply With Quote
Old 07-05-2016, 05:28 AM   #6
LittleBear
Registered User
 
Join Date: Mar 2008
Location: Brklyn. Got a Problem wit dat?
Posts: 789
My Ride: 2001 330i
Motor & tranny mounts all replaced, fan electric only....
I have to try the clutch-in coast at 80 mph next. Don't know why I haven't yet!

Thanks Experts! Murf
Attached Thumbnails
Click image for larger version

Name:	PC121159.jpg
Views:	17
Size:	228.3 KB
ID:	636052  
__________________
"The Indian smiles, he thinks that the cowboy is his friend. The cowboy smiles, he is glad the Indian is fooled. Now he can exploit him"

Last edited by LittleBear; 07-05-2016 at 05:29 AM.
LittleBear is offline   Reply With Quote
Old 07-05-2016, 10:15 AM   #7
Mango
FCPEuro.com-Code: MangoFCP5
 
Mango's Avatar
 
Join Date: Mar 2006
Location: Southern California
Posts: 24,677
My Ride: 2016 Lexus
Technically an alternator can vibrate, but you wouldn't feel it at 80mph. Or at any speed, really. Hard to say without being there. But anything large that spins (wheels, tires, driveshaft, axles), consider it.
__________________
ONE MILLION VIEWS
Complete Cooling System Guide | Pro Maintenance | Suspension Refresh | New Owner?


Support our DMAX: www.Facebook.com/DMAXstandup
FCPEuro.com - use code MangoFCP5 to get 5% off your order!
Mango 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 01:28 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
(c) 1999 - 2016 performanceIX Inc - privacy policy - terms of use