40mph wobble - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > WF Local > WF Local Forums for Your Region and State > California Jeep Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 11-29-2013, 09:26 PM   #1
Jeeper
 
csumjr's Avatar
 
Join Date: Sep 2012
Location: Pomona, California
Posts: 272
Angry 40mph wobble

I think I may have bent my track bar, or drag link, or something else. I get a violent shake at 40 mph. Anything lower than or higher than 40, she rides smooth.....any ideas on what's wrong/solutions? Any help would be appreciated.

__________________
A Madman, with a Jeep....
csumjr is offline   Quote Quick Reply
Old 11-29-2013, 09:36 PM   #2
Jeeper
 
Moabrubi's Avatar
 
Join Date: May 2011
Location: Rancho Cucamonga, CA
Posts: 1,567
Well start with the simple things.. Tires balanced correctly? Wheels bent/out of round? When this happened on one of ours it was just a tire issue. It wasn't a violent wobble though.

Did you do the dry steering test?

Moabrubi is online now   Quote Quick Reply
Old 11-29-2013, 09:49 PM   #3
Jeeper
 
XJ_Phil's Avatar
 
Join Date: Nov 2012
Location: High Desert - Victorville, CA
Posts: 804
Quote:
Originally Posted by csumjr View Post
I think I may have bent my track bar, or drag link, or something else. I get a violent shake at 40 mph. Anything lower than or higher than 40, she rides smooth.....any ideas on what's wrong/solutions? Any help would be appreciated.

I've said it before, I'll say it again....I am not the go to guy for tech support, but it seems to me that tire balance would give you that problem only at specific speeds. Like J.C. says, go thru the steps one by one to eliminate what it is not to figure out what it is.
XJ_Phil is offline   Quote Quick Reply
Old 11-30-2013, 12:01 AM   #4
Jeeper
 
TheDesertOutlaw's Avatar
 
Join Date: Jan 2012
Location: Riverside, CA
Posts: 1,544
Have you tried rotating your tires? Air them down to 28 p.s.i. and see if the problem persists, too.
__________________
Tomb Raider #815 - 2003 1/2 Jeep Wrangler Rubicon w/4" Pro Comp/Metal Cloak dbl adj arms, Pro-Comp MX-6, Daystar BL, K&N FIPK II w/Air Raid, ViAir Extreme OBA, Currie Steering, Black Rock D909s, 35" BFG KM2 -- BUILT FOR BAJA
4" 33" to 35"
https://scontent-b-sjc.xx.fbcdn.net/hphotos-xpf1/t1.0-9/1517457_10203416408666416_5192773015714389607_n.jp  g
TheDesertOutlaw is offline   Quote Quick Reply
Old 11-30-2013, 12:14 AM   #5
Jeeper
 
ShinnyOrangeTJ's Avatar
 
Join Date: Nov 2013
Posts: 195
Could possibly add a steering stabilizer if it doesn't already have one.
__________________
2001 TJ
Orange Massacre.
ShinnyOrangeTJ is offline   Quote Quick Reply
Old 11-30-2013, 01:45 PM   #6
Newb
 
all4wheels's Avatar
 
Join Date: Oct 2013
Location: CenCal
Posts: 1
Steering stabilizer is just going to hide a problem. Check that your track bar bolts are torqued to 125 lbs. your tires are balanced. If its not those do a complete front end check to include your ball joints. We all know how reliable Mopar ball joints are.
all4wheels is offline   Quote Quick Reply
Old 12-03-2013, 04:42 PM   #7
Jeeper
 
sean.royalty's Avatar
 
Join Date: May 2013
Posts: 20
Check the track bar mounting holes. If your track bar has loosened up it has a tendency to make the bolt holes outta round and bigger than they should be. We had to weld my buddies up and redrill. Since then his jeep hasn't had anymore issues.
sean.royalty is offline   Quote Quick Reply
Old 12-05-2013, 12:05 AM   #8
Jeeper
 
4xWheeler's Avatar
 
Join Date: Dec 2013
Posts: 121
Question: Are you running 35" or bigger tires? You might be dealing with the beginings of the dreaded death wobble.

I was running 35-12.5x15s and with in a few hundred miles they would start to act up. They start to shake between 40-45 mph then smooth out at higher speeds. Through time it only got worse. I dreaded every minor bump in the road because the jolt could set it off. It got so bad it happened while I was on the freeway doing 75 on some crappy section of asphalt. talk about scary. I read everything on how to fix the problem, heard every garage fix, and tried everything I could without spending a fortune on new front end parts but still no fix.

My buddy was driving around in a YJ that had 33-12.5s and said he never had any trouble. I finally succumbed to the teeth rattling shaking and purchased a set of 33-12.5x15s. Yes- new tires don't shake and drive beautifully but even after some time now I still don't even have a shake.

I hate to be a bearer of any bad news but that is what worked for me. I still have my 35s but I think I'll use them for off road only.
4xWheeler is offline   Quote Quick Reply
Old 12-06-2013, 08:30 PM   #9
Jeeper
 
csumjr's Avatar
 
Join Date: Sep 2012
Location: Pomona, California
Posts: 272
Running 32's, daily driver......I know, I've come to the acceptance.....I need new tires. Thanks for the input, from ALL of My fellow Jeepers.
__________________
A Madman, with a Jeep....
csumjr is offline   Quote Quick Reply
Old 12-06-2013, 11:08 PM   #10
Jeeper
 
4xWheeler's Avatar
 
Join Date: Dec 2013
Posts: 121
Hmm. For that size I would look at the wear factor of your tire to see what the front end might be doing. I would think of balance, alignment and rotation to start.
4xWheeler is offline   Quote Quick Reply
Old 12-08-2013, 11:45 PM   #11
Newb
 
Join Date: Dec 2013
Posts: 1
I am currently experiencing the same problem. I can drive fine at low speeds but when I hit 40mph my entire steering wheel and jeep shake violently.My tires were rotated and my mehanic suspects it may be the traction control bar and or the steering stabilizer. I trust him as he is my adopted dad and isn't gaining anything from fixing my darling jeep but im hessitant still. My tires DO need replacing. Rotating my tires did not help the issue at all.
ashbuggin is offline   Quote Quick Reply
Old 12-10-2013, 02:05 AM   #12
Jeeper
 
jlopes68's Avatar
 
Join Date: Jun 2013
Location: chino, ca
Posts: 191
Images: 12
Having the same issue at 30mph on an 07 jk so far I've replaced the tie rod ends, drag link, checked the trak bar hole (its fine) welded a cracked weld at the trak bar bracket and still having issues. I'm doing ball joints next and have been advised that I may also need to rebuild the steering gear box. We are also on 35's
jlopes68 is offline   Quote Quick Reply
Old 12-10-2013, 03:45 AM   #13
Supporting Member

WF Supporting Member
 
DustyDave's Avatar
 
Join Date: Jan 2013
Location: Seal Beach
Posts: 122
Bent my driveshaft on John Bull. Couldn't get over forty without the shakes of the whole rig. See if any weights might have been knocked off or dents. Replaced both shafts with Tom Woods.
DustyDave is offline   Quote Quick Reply
Old 12-10-2013, 09:51 AM   #14
Jeeper
 
Bob.'s Avatar
 
Join Date: Jun 2013
Posts: 98
Mine was doing the same and was the track bar both times I looked at it. I had to weld the holes and drill them out again due to the having movement when tight. The track bar has a lot of stress on it so make sure this is not the case on yours. I also replaced my tires and it helped with the rest of the issues. Remember that when you replace any one steering component it will make any other on that is bad worse. When you get some tight components it will make the others go bad, and feel worse. I started by replacing rod ends and ended by replacing the track bar. Get the track bar at Auto Zone and have them price match Oriley's for like 50 bucks instead of 100 bucks. Good luck
Bob. is offline   Quote Quick Reply
Old 12-10-2013, 07:55 PM   #15
Jeeper
 
csumjr's Avatar
 
Join Date: Sep 2012
Location: Pomona, California
Posts: 272
Had the passenger side wheel balanced. The guy said my rims are crap....Track bar is fine, stabilizer recently replaced...Fact is, I need new rims and tires...
__________________
A Madman, with a Jeep....
csumjr is offline   Quote Quick Reply
Old 01-06-2014, 07:19 AM   #16
Jeeper
 
jlopes68's Avatar
 
Join Date: Jun 2013
Location: chino, ca
Posts: 191
Images: 12
On this 07 jk After replacing the ball joints, tie rod ends, drag link, welded Trac bar bracketI pressed new bushings on to the upper and lower control arms and noticed an improvement and subsequently could now notice a tiny bit of movement on the Trac bar when someone turned the steering back n forth, and I mean tiny. I then pressed new bushings on the Trac bar and death wobble was eliminated.

jlopes68 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler 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

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 Off
Pingbacks are Off
Refbacks are Off



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid
» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 08:49 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC