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We have Engo 10k Synthetic IN STOCK!!! Hurry while supplieCustom Axle Work at CCORJEEP Gear Change Packages From ROCKRIDGE 4WD. We Are DIFF

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Unread 06-30-2010, 07:39 PM   #1
planejeep
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2005 TJ Wrangler 
 
Join Date: Jun 2010
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BAD Shimmy at 50-55 MPH

My 2005 Wrangler X has a really bad shimmy in the front end at 50-55 MPH. I can accelerate out of the shaking but if traffic slows, the poor thing feels like it is going to shake apart. No, I am not braking when this occurs.
I have done a visual inspection of the suspension and nothing appears broken or loose. All the wheel weights are still in place...I am at a loss.
The 4x4 light is on, but it is not engaged. This darn light has been on for about 6 months. I am not sure if these are related but worth stating just in case.
Thanks for your help!

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Unread 06-30-2010, 07:44 PM   #2
SolidBrass
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2000 TJ Wrangler 
 
Join Date: Jul 2009
Location: Jackson Hole, WY
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I got a front end wobble the other day. One of the front sway bar bolts was 1-2 turns from bouncing down the hwy. I put some loc-tite on it. Did you check wheel lugs?

***EDIT***

It did the bad death wobble today. Found a loose front passenger track bar bolt was fubar.

Link to thread here...

http://www.jeepforum.com/forum/f9/de...k-bar-1062695/

Last edited by SolidBrass; 07-03-2010 at 08:36 PM..
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Unread 06-30-2010, 11:47 PM   #3
ClassicRiderhp
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2001 TJ Wrangler 
 
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OP, is it death wobble or is it just a shimmy/vibration?
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Unread 07-01-2010, 12:15 AM   #4
05tjx
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Check the air in the front tires and make sure they are not cupped, Get your wrenches out and tighten all your control arm and stabilizer bolts. Also your front trac bar, does your jeep have a lift if it does, does it have the extended pitman arm. Anything 4 inches of lift and below shouldnt have the drop pitman arm on it. Do all that and get your tires balanced and see what happens.
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Unread 07-01-2010, 05:02 AM   #5
chadsmeltzer
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2004 TJ Wrangler 
 
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Balance your tires, they love to shake around 50mph.
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Unread 07-01-2010, 08:36 PM   #6
planejeep
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Thanks everyone. I will be spending some time in the garage this weekend. I will post if I find anything.
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Unread 07-04-2010, 10:38 PM   #7
Hesher420
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Not to hijack, but I am having the same problem.

Between 55 - 65 mph. I get a shimmy/shake in the front end and in the steering wheel. It seems to happen about 80% of the time I am in that speed range. (Some times, but not often, no shake at all) It happens when accelerating, decelerating, and when holding a constant speed.

*It is not a tire balance issue. I took all 4 tire/wheels off and put on the stock 30's I still have and nothing changed.
*I have also changed the LCA's since it has been doing it and, no change.
*I checked the torque on the CA's, the trackbar, and the steering stabilizer. All good.

What else up there could cause this speed sensitive shake? How can I check it out without blindly throwing parts at it?
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Unread 07-04-2010, 11:49 PM   #8
colgatefootball
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all sounds like death wobble a bit....Id search for threads about death wobble and follow all the instructions see if it helps...
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Unread 07-05-2010, 04:44 AM   #9
Ryon
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I had the same problem with my 06 X, same speed and everything. I went to Walmart and got all the tires rebalanced cause the tread has worn out alot since I put the tires on it. But Long story short, 20 dollars and my death wobble is gone. Give it a try and see if it helps ya.
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Unread 07-05-2010, 07:02 PM   #10
Hesher420
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Well, I can see some flex in the track bar bushing at the axle when the steering wheel is rocked back and forth, so today I ordered a new bushing at AutoZone. It is the Energy Suspension poly replacement, part# 2.7102. It only cost $11 and seems like the place to start.
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Unread 07-05-2010, 07:47 PM   #11
ImportInvasion
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Ill save you some headache. I recently had the EXACT same problem. I checked all suspension components. Changed my brakes and rotors. Changed all four shocks, greased all ball joints, had my tires balanced, and front end aligned. It still shook at that speed range. Bought brand new tires, PROBLEM SOLVED. I don't understand exactly why it was happening, but new tires fixed the problem for good. Maybe an internal belt torn??? Hope this helps.
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Unread 07-05-2010, 08:44 PM   #12
NDTIII
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Quote:
Originally Posted by Hesher420 View Post
Well, I can see some flex in the track bar bushing at the axle when the steering wheel is rocked back and forth, so today I ordered a new bushing at AutoZone. It is the Energy Suspension poly replacement, part# 2.7102. It only cost $11 and seems like the place to start.
Best (and cheapest) place to start. Cured mine with a $10 urathane bushing too. Be sure to check for ovality in the bolt hole for the bushing. If it's not gone, wiggle the wheel and see what else moves the most and replace that next.
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Unread 07-06-2010, 05:15 PM   #13
Hesher420
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Quote:
Originally Posted by ImportInvasion View Post
Ill save you some headache. I recently had the EXACT same problem......Bought brand new tires, PROBLEM SOLVED.
Quote:
Originally Posted by Hesher420 View Post
*It is not a tire balance issue. I took all 4 tire/wheels off and put on the stock 30's I still have and nothing changed.
In my case, I put a known good set of tires/wheels on and nothing changed.
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Unread 07-06-2010, 06:05 PM   #14
Sergio815
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EXACT same Problem - Solved

I had the exact problem between 50-55 and yes I could accelerate out of it too. Let the issue go on to long I am sure but Saturday took to my Local Firestone/Bridgestone which is managed by a relative. He said alignment was way off and front tires(well right front was worn uneven). Did the alignment, replaced two tires, think he moved backs to front and new ones put in back but not 100% sure.

Problem Solved... at least for now.


Quote:
Originally Posted by planejeep View Post
My 2005 Wrangler X has a really bad shimmy in the front end at 50-55 MPH. I can accelerate out of the shaking but if traffic slows, the poor thing feels like it is going to shake apart. No, I am not braking when this occurs.
I have done a visual inspection of the suspension and nothing appears broken or loose. All the wheel weights are still in place...I am at a loss.
The 4x4 light is on, but it is not engaged. This darn light has been on for about 6 months. I am not sure if these are related but worth stating just in case.
Thanks for your help!
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Unread 07-09-2010, 06:23 PM   #15
Hesher420
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2006 LJ Wrangler 
 
Join Date: Oct 2005
Location: Milwaukee WI
Posts: 1,771
UPDATE:

Original problem:
Quote:
Originally Posted by Hesher420 View Post
Between 55 - 65 mph. I get a shimmy/shake in the front end and in the steering wheel. It seems to happen about 80% of the time I am in that speed range. (Some times, but not often, no shake at all) It happens when accelerating, decelerating, and when holding a constant speed.

*It is not a tire balance issue. I took all 4 tire/wheels off and put on the stock 30's I still have and nothing changed.
*I have also changed the LCA's since it has been doing it and, no change.
*I checked the torque on the CA's, the trackbar, and the steering stabilizer. All good.
I noticed some play in the trackbar bushing so I just replaced it with a energy suspension poly bushing. I also replaced the OEM bolt with a true (10mm?) bolt to eliminate any play in the bushing mount. This has helped lessen the frequency of the shimmy/shake, but has not eliminated the shake, or notably lessened the severity of the shake when it does happen.


What else up there could cause this speed sensitive shake? How can I check it out without blindly throwing parts at it?
__________________

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