Reply
 
Thread Tools Display Modes
 
Old 10-05-2010, 02:56 PM   #1
Senior Member
 
stikine's Avatar
 
Join Date: May 2009
Location: Tetonia & Pocatello, ID
Posts: 109
Drive Line Vibration?

Was looking for any advice regarding some vibration I'm getting at highway speed, quite noticeable around 65 mph which is my top speed I drive at. I first noticed it in July, but maybe it was always there since I purchased the van in late winter.

The vibration is a bit subtle, but I feel it in the seat of my pants, and when I let off the accelerator it stops. My BFG AT's are near the end of their lives, but other than some cupping on the inside of the front tires, and a few chunks missing from the outer knobs the tires are not too bad.

Any help appreciated.

Scott
__________________

__________________
2007 SMB White 4x4 RB50 6.0l Diesel PH, Toyo 295/70/17 M/T E
http://www.ecotonephoto.com/
stikine is offline   Reply With Quote
Old 10-05-2010, 03:16 PM   #2
Senior Member
 
Bones_GSXR's Avatar
 
Join Date: Feb 2009
Location: Spenard, Ak
Posts: 327
Re: Drive Line Vibration?

If it is a driveshaft vibration it is more like a hum and you can feel the whole body vibrate. Tierod, ball joint, and tire you usally feel through the steering wheel.
If the driveshaft is out of balance it is at all speeds but can get worse at you go faster.
If the pinion angle is off it usally comes on at one speed but after that it ismuch worse, but if you slow from that speed it gos away. This is do to the ujoints turning at different speeds, when you hit that magic number you get a vibration as they start to fight. mine does this at 63 or higher. I am milling a 7 deg shim to fix mine.

Lots of info on driveshaft building on the web.
__________________

__________________
2001 RWB Quigley (not a SMB but love it)
Lots of Motorcycles (Dual Sports, Sportbikes and Sport Tourers)
Bones_GSXR is offline   Reply With Quote
Old 10-05-2010, 03:56 PM   #3
Senior Member
 
stikine's Avatar
 
Join Date: May 2009
Location: Tetonia & Pocatello, ID
Posts: 109
Re: Drive Line Vibration?

Thanks - something I will have to add to my list to check into.
__________________
2007 SMB White 4x4 RB50 6.0l Diesel PH, Toyo 295/70/17 M/T E
http://www.ecotonephoto.com/
stikine is offline   Reply With Quote
Old 10-05-2010, 05:32 PM   #4
Senior Member
 
jage's Avatar
 
Join Date: Apr 2007
Location: Franktown, CO
Posts: 7,591
Re: Drive Line Vibration?

Discount Tire will balance and rotate your tires for something under $50, or rotate them for free. Even if you're not a warranty holder with Discount Tire, it's a good way to check that it's not your tires... I've had BFGs that wouldn't take a balance after many years and had to replace them. I've also got slight cupping on my one of my Nittos from not rotating them for 17K miles. Shhh! Don't tell anyone I raved to about the Nittos! Actually I can't really feel now that they're on the back.
__________________
and then
everything changed
jage is offline   Reply With Quote
Old 10-08-2010, 09:18 AM   #5
Senior Member
 
stikine's Avatar
 
Join Date: May 2009
Location: Tetonia & Pocatello, ID
Posts: 109
Re: Drive Line Vibration?

Well the vibration I was getting turned out to be a bad rear U-joint. Only 29,000 miles on the van and it was in bad shape - had it in at the Ford garage as there are some engine issues they are looking into also.

Wonder if the lack of any grease zerks back there is the reason for such a short life?
__________________
2007 SMB White 4x4 RB50 6.0l Diesel PH, Toyo 295/70/17 M/T E
http://www.ecotonephoto.com/
stikine is offline   Reply With Quote
Old 10-08-2010, 01:18 PM   #6
Senior Member
 
carringb's Avatar
 
Join Date: Jan 2009
Location: Corvallis, OR
Posts: 3,830
Re: Drive Line Vibration?

Hmmmm. My first set of U-joints lasted 260,000 miles. They were "sealed" joints - aka non-greasable. But.... Oregon doesn't allow road salt, so I think our vehicles are saved from some corrosion issues others face.
__________________
2000 E350 extended wagon dually
V10 w/ Banks Powerpack, Diablo Predator
Buckstop Outback bumper/grill guard
Reunel rear bumper
carringb is online now   Reply With Quote
Old 01-12-2016, 10:30 AM   #7
Junior Member
 
Join Date: Jun 2014
Posts: 3
Hey there, I just came across your post, although really old, I just started having the same problem (33K). Were you getting a thud as well when re-accelerating? I have the vibration at freeway speed, and though rear ujoint as well. Did that fix the problem for good?

Quote:
Originally Posted by stikine View Post
Well the vibration I was getting turned out to be a bad rear U-joint. Only 29,000 miles on the van and it was in bad shape - had it in at the Ford garage as there are some engine issues they are looking into also.

Wonder if the lack of any grease zerks back there is the reason for such a short life?
surfnfire is offline   Reply With Quote
Old 01-12-2016, 03:39 PM   #8
Member
 
Join Date: Jul 2013
Location: NC
Posts: 36
I had this same problem this past summer. It turned out to be the rear u-joint. It was on it's last legs, it failed and took a chunk out of the yoke just as I got it to the mechanic to repair. That probably could've been bad at highway speeds if the driveshaft came off.

rexracer530 is offline   Reply With Quote
Old 01-12-2016, 06:29 PM   #9
Site Team
 
daveb's Avatar
 
Join Date: May 2007
Location: Turlock Ca
Posts: 9,617
Garage
I had the same issue a few years back with the rear U joint. Limped from Ely to central ca. I had the drive line balanced and gone over when they installed a new U joint after I got home. No more vibration.
__________________
2006 Ford 6.0PSD EB-50/E-PH SMB 4X4 Rock Crawler Trailer

Sportsmobile 4X4 Adventures..........On and off road adventures
daveb is offline   Reply With Quote
Old 01-13-2016, 11:00 PM   #10
Senior Member
 
WhitH's Avatar
 
Join Date: Sep 2013
Location: Eugene, Oregon
Posts: 673
I suspect I'm having a similar issue. Been thinking I had a weight get knocked off a rear tire and just need a balance but I had them done not too long ago so now I'm not so sure. Comes on right at 63 mph as well and is in the rear. Any visual clues I should look for beyond a chunk missing from the U joint?
__________________

__________________
2015 Chevy Express 3500 Duramax
w/ Quigley 4x4 & Agile Fox shocks
Sold 2005 E350 Chateau
Quigley with Agile RIP, 6.0 PSD
WhitH is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Sportsmobile SIP or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 07:11 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.