Crazy shaking and jerking in my suspenion - Ford Powerstroke Diesel Forum
Suspension & Steering Discuss OEM & aftermarket suspension, lifts, air ride suspension, shocks, steering components, etc.

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-13-2009, 10:35 AM
WILD PHIL


 

Join Date: Jan 2009
Location: Austin Texas
Posts: 581
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Powerstroke_soldier
Crazy shaking and jerking in my suspenion

Im currently deployed and I just had a lift installed on my truck. I went with a 6 inch tough country with dual steering stabilizers. The truck drove fine before now that the lift is on my mechanic is telling me if you hit a bump above 30mph it starts hopping and jerking. Does any one have any idea of what the problem may be? Ive been told I may have some bushings out. Its a 2005 4x4 XL powerstroke with 47k miles on it. I had a front end alignment done on it 10k miles ago with stock suspenion and everything was fine. Any body have any ideas?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 09-13-2009, 11:03 AM
Compression Ignition Addict
 

Join Date: Sep 2009
Location: Atlanta area
Posts: 544
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
You are experiencing the "death wobble" It's in your steering system, not suspension. It's not so good on the steering parts when this happens. Ford issued a TSB or some sort of bulletin on this and they claim it is mostly due to underinflated tires. Have your's checked. My truck did this with a pro-comp 6" lift and I had to get DR/Icon dual steering stabilizers to get it to go away. Doesn't do it anymore. I think the gas stabilizers are much better than the hydraulic stabilizers because they always are pulling the steering to the center. Unlike a hydraulic stabilizer, the gas ones will no remain where you push/pull the cylinder. They go back to center. Do some searching on "death wobble" because I'm 99% sure that's what your problem is.

-Kelly
Reply With Quote Quick reply to this message
  #3  
Old 09-13-2009, 11:17 AM
WILD PHIL


 

Join Date: Jan 2009
Location: Austin Texas
Posts: 581
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Powerstroke_soldier
OK thanks alot kelly. Turns out he hadnt installed the steering stabs yet. So hopefuly thats the suloution.
Reply With Quote Quick reply to this message
  #4  
Old 09-13-2009, 12:24 PM
WILD PHIL


 

Join Date: Jan 2009
Location: Austin Texas
Posts: 581
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Powerstroke_soldier
Ok dual stabs are on and the problem is gone. Thanks alot Kelly.
Reply With Quote Quick reply to this message
  #5  
Old 09-14-2009, 11:21 AM
Compression Ignition Addict
 

Join Date: Apr 2008
Location: Wellington Nevada
Posts: 8,489
Thanks: 1
Thanked 22 Times in 22 Posts
Feedback Score: 5 reviews
IMO lifts over 4" need the 4 link arms as you can add extra castor thats really needed on the '05 and up.
Reply With Quote Quick reply to this message
  #6  
Old 09-14-2009, 05:12 PM
Compression Ignition Addict
 

Join Date: Jun 2008
Posts: 2,276
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Have you had an alignment done since the lift?

I'd lean towards your caster being a little too negative and/or trac bar/trac bar bracket being loose.

Stabilizers will help minimize feedback from the road.....but the "death wobble" is caused by other issues.
Reply With Quote Quick reply to this message
  #7  
Old 09-15-2009, 07:27 AM
WILD PHIL


 

Join Date: Jan 2009
Location: Austin Texas
Posts: 581
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Powerstroke_soldier
sORRY GUYS, he acually installed the dual steering stabs. ONCE THOSE WERE ON IT WAS GOOD. nO PROBEMS SINCE THEN. hOPEFULLY THE WHEELS WILL FIT WITH THE SPACERS.
Reply With Quote Quick reply to this message
  #8  
Old 09-15-2009, 07:33 AM
WILD PHIL


 

Join Date: Jan 2009
Location: Austin Texas
Posts: 581
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Powerstroke_soldier
ALso is it better to do the alignment with the 37s or the stock?
'
Reply With Quote Quick reply to this message
  #9  
Old 09-15-2009, 04:57 PM
Compression Ignition Addict
 

Join Date: Jun 2008
Posts: 2,276
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
As long as the shop can align it with the aftermarket tires and wheels then do it with them on.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 11:50 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors