What to check next for shimmy? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-18-2014, 08:48 AM   #1
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
What to check next for shimmy?

Tires have been road forced balanced
Proper psi
Alignment is at .20 total toe in which is close to 1/8"
Jks track bar bolts are torqued
Newer ZJ tierod
Newer moog stabilizer
Stock control arms bolts torqued
Jks quick discos torqued
Both drive shaft ujoints replaced
Tire shop said I didnt have play in balljoints

Still have a steering wheel shimmy at 40-45mph, not death wobble.

So what do I check next?

05LJTampa is offline   Quote Quick Reply
Old 03-18-2014, 09:06 AM   #2
Jeeper
 
UFOtestpilot's Avatar
 
Join Date: Nov 2012
Location: Portland, Oregon
Posts: 1,818
I just got the last bit of shimmy squared away on my rig. I replaced every single steering component except the joint at the pitman arm on the opposite end of the draglink. Every single joint on the TRE's including the draglink to knuckle end was loose and rattling when I removed them. I'm glad I did the draglink too when I did the ZJ tie rod stuff. I'm going to get the pitman arm end this weekend just to be 100% new with all of it. Thus was on an '06 with 60k miles.

I also had a shot rear track bar that I upgraded to the metal cloak unit. This helped immensely with tracking, the instability over bumps, and rear end wag but I don't know if it contributed to any of the shimmy per sé.

__________________
For some, it is easier to kill the light inside of themselves than it is to fight the darkness all around them.
UFOtestpilot is offline   Quote Quick Reply
Old 03-18-2014, 09:12 AM   #3
Supporting Member

WF Supporting Member
 
Water Dog's Avatar
 
Join Date: Mar 2011
Location: Roseville, CA
Posts: 5,066
Images: 11
You might want to try shifting the back wheels/tires to the front to see if it changes anything. At least that would rule out or confirm wheels or balancing.
__________________
Dennis
Water Dog is online now   Quote Quick Reply
Old 03-19-2014, 08:42 PM   #4
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Took it to a shop today that deals with jeeps. Looked everything over. Only thing he could notice even after a test drive was had a little movement in lower balljoints. So looks like i'll be learning how to replace balljoints on a tj soon. Can get spicer joints for $120 for both front d & p side.
05LJTampa is offline   Quote Quick Reply
Old 03-19-2014, 09:24 PM   #5
Jeeper
 
DoubleOught's Avatar
 
Join Date: Feb 2014
Location: Nashville GA
Posts: 1,178
Could be a bad tire or bent wheel, maybe damaged unit bearing.
DoubleOught is offline   Quote Quick Reply
Old 03-19-2014, 10:23 PM   #6
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Quote:
Originally Posted by DoubleOught View Post
Could be a bad tire or bent wheel, maybe damaged unit bearing.
Road force balance on 33s was less than 10lbs which they said is excellent. Doesnt change (the shimmy) with rotation of tires
05LJTampa is offline   Quote Quick Reply
Old 03-19-2014, 10:44 PM   #7
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,382
Images: 2
A Roadforce balance is no guarantee of an adequate balance. More than once I have had to return multiple times to get a speed sensitive shimmy out of my TJ.
__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Old 03-20-2014, 07:23 AM   #8
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Quote:
Originally Posted by Jerry Bransford View Post
A Roadforce balance is no guarantee of an adequate balance. More than once I have had to return multiple times to get a speed sensitive shimmy out of my TJ.
Ok. Theyve been rebalanced 4 times since November then the road force this past Monday.
05LJTampa is offline   Quote Quick Reply
Old 03-20-2014, 08:07 AM   #9
Jeeper
 
Shark_13's Avatar
 
Join Date: Dec 2012
Location: Idaho
Posts: 1,360
If you did the tie rod upgrade, did you do the drag link at the same time?

Also, how are the stock control arm bushings? How many miles on them?

Front axle u-joints and unit bearings checked?
Shark_13 is offline   Quote Quick Reply
Old 03-20-2014, 08:17 AM   #10
Jeeper
 
stumpbuster's Avatar
 
Join Date: Dec 2008
Location: ct
Posts: 403
you lifted it right?
steep angle for front ca's
__________________
......_____
......\o____o
../----L- []IIIII[]-
...............====
()_) ()_)=o==)_)..
RUBICON ON 37'S
stumpbuster is offline   Quote Quick Reply
Old 03-20-2014, 09:04 AM   #11
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
2.5" lift, 1.25" BL, 1" MML
62k miles on jeep
Stock CA bushings dont look that bad.

I just cant believe theyve been balanced 4-5 times by various shops and still have an issue with them.

If I were to swap out CA for Currie or whatever, do I have to do them all at once or can I do say lowers, fronts etc.

I was going to do the axle ujoints & balljoints probably at the same time anyways.
05LJTampa is offline   Quote Quick Reply
Old 03-20-2014, 09:05 AM   #12
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Quote:
Originally Posted by Shark_13 View Post
If you did the tie rod upgrade, did you do the drag link at the same time? Also, how are the stock control arm bushings? How many miles on them? Front axle u-joints and unit bearings checked?
No i didnt do the drag link then
05LJTampa is offline   Quote Quick Reply
Old 03-20-2014, 11:15 AM   #13
Jeeper
 
DoubleOught's Avatar
 
Join Date: Feb 2014
Location: Nashville GA
Posts: 1,178
Sounds like you either have a bad tire or one that is out of round then.
DoubleOught is offline   Quote Quick Reply
Old 03-20-2014, 03:17 PM   #14
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Quote:
Originally Posted by DoubleOught View Post
Sounds like you either have a bad tire or one that is out of round then.
But even with a 5 tire rotation I just so happen to have the bad tire in the mix?
05LJTampa is offline   Quote Quick Reply
Old 03-20-2014, 03:20 PM   #15
Jeeper
 
UFOtestpilot's Avatar
 
Join Date: Nov 2012
Location: Portland, Oregon
Posts: 1,818
Like I said, I found the last bit of mine in the tie rod and draglink ends. Neither of which was noticeable with the dry steer test (to me). Worth a look given everything you have covered in your list. Seems to be the only thing neglected thus far.
__________________
For some, it is easier to kill the light inside of themselves than it is to fight the darkness all around them.
UFOtestpilot is offline   Quote Quick Reply
Old 03-20-2014, 04:29 PM   #16
Supporting Member

WF Supporting Member
 
Water Dog's Avatar
 
Join Date: Mar 2011
Location: Roseville, CA
Posts: 5,066
Images: 11
Quote:
Originally Posted by 05LJTampa View Post
Took it to a shop today that deals with jeeps. Looked everything over. Only thing he could notice even after a test drive was had a little movement in lower balljoints. So looks like i'll be learning how to replace balljoints on a tj soon. Can get spicer joints for $120 for both front d & p side.
Did they confirm movement in ball joints as opposed to unit bearings?
__________________
Dennis
Water Dog is online now   Quote Quick Reply
Old 03-20-2014, 04:46 PM   #17
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Quote:
Originally Posted by Water Dog View Post
Did they confirm movement in ball joints as opposed to unit bearings?
They raised it up, took channelocks and moved the upper joint and i could feel a little popping sensation in the driver side lower ball joint.

They didnt check unit bearings.
05LJTampa is offline   Quote Quick Reply
Old 03-20-2014, 05:54 PM   #18
Newb
 
My_1st_TJ2003's Avatar
 
Join Date: Oct 2013
Posts: 7
Maybe a bent rim you should find a shop that has a balancer that can check the lateral runout
My_1st_TJ2003 is offline   Quote Quick Reply
Old 03-20-2014, 06:01 PM   #19
Jeeper
 
LJ Dave's Avatar
 
Join Date: Jan 2014
Location: Pine, Colorado
Posts: 591
I couldn't tell from your profile so I'll ask... Any chance you have wheel spacers on your rig? If so, did you remove the small serrated washer on one stud on each wheel before installing the spacers? If you have spacers and left that tiny washer on there they will not seat properly and your wheels will wobble slightly.
__________________
_____________
2005 Rubicon LJ, 4.5 lift, 35's
LJ Dave is online now   Quote Quick Reply
Old 03-20-2014, 06:24 PM   #20
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Quote:
Originally Posted by LJ Dave View Post
I couldn't tell from your profile so I'll ask... Any chance you have wheel spacers on your rig? If so, did you remove the small serrated washer on one stud on each wheel before installing the spacers? If you have spacers and left that tiny washer on there they will not seat properly and your wheels will wobble slightly.
Cant tell about my profile from my phone. But no spacers. I replaced my rotors so i know those washers are gone.
05LJTampa is offline   Quote Quick Reply
Old 03-21-2014, 01:16 AM   #21
Jeeper
 
my996duc1's Avatar
 
Join Date: Mar 2013
Location: SoCal
Posts: 549
I am watching this one.... I also have a slight shimmy in mine between 45-50 mph.

I went through multiple balances to include a road force balance.
Rotated tires numerous times
Switched rims
New Currie Control Arms (upper and lower)
New Currie HD steering
New Currie Trac Bar

The only things I have left to change out are :
- ball joints
- front wheel bearing assemblies
- upper control arm axle end bushings


Hopefully I can eventually get this chased out.

Please post up if you get yours resolved.


_
__________________
2005 LJ Rubicon Sahara #0090 - MetalCloak fenders / Currie 4" lift with AntiRock / 35x12.50 Goodyears / UCF skids

My build project : http://www.wranglerforum.com/f5/rubi...es-328649.html
my996duc1 is offline   Quote Quick Reply
Old 03-21-2014, 10:18 AM   #22
Jeeper
 
lynn's Avatar
 
Join Date: Jul 2011
Location: York, PA
Posts: 1,149
I had the 47 - 53 shimmy in my LJ.
As with the OP, everything checked out good. Did the RF balance, bigger bolt for the JKS adjustable trackbar (for higher torque), etc. Nothing fixed it.

I eventually replaced by stock front LCAs with Currie single adjustables. Set to 1/4" longer than stock.
Shimmy instantly disappeared, no hint of it two years later.

YMMV...
__________________
Lynn
'05 LJ
lynn is offline   Quote Quick Reply
Old 03-21-2014, 10:57 AM   #23
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Quote:
Originally Posted by lynn View Post
I had the 47 - 53 shimmy in my LJ. As with the OP, everything checked out good. Did the RF balance, bigger bolt for the JKS adjustable trackbar (for higher torque), etc. Nothing fixed it. I eventually replaced by stock front LCAs with Currie single adjustables. Set to 1/4" longer than stock. Shimmy instantly disappeared, no hint of it two years later. YMMV...
Thanks! Im half tempted to do the lca before the balljoints anyways. Control arms were on my to do list but cant do everything at once.
05LJTampa is offline   Quote Quick Reply
Old 03-21-2014, 07:44 PM   #24
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,382
Images: 2
If something that spins is out of round/out of balance, is holding it more tightly so the vibrations are no longer as apparent actually fixing the real problem? Or is that just a band-aid fix?

Like a steering damper used to suppress Death Wobble symptoms is only a band-aid fix, it's not the real root-cause fix. Sooner or later whatever is being used to hold vibrations at bay are going to get tired, wear & loosen up, etc. and the vibrations will come back.
__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Old 03-24-2014, 01:06 PM   #25
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Quote:
Originally Posted by Jerry Bransford View Post
If something that spins is out of round/out of balance, is holding it more tightly so the vibrations are no longer as apparent actually fixing the real problem? Or is that just a band-aid fix? Like a steering damper used to suppress Death Wobble symptoms is only a band-aid fix, it's not the real root-cause fix. Sooner or later whatever is being used to hold vibrations at bay are going to get tired, wear & loosen up, etc. and the vibrations will come back.
Your shops around you must be different. Ive tried taking my jeep back on 2 different occasions from 2 different shops and they swear theyre balanced each time. So am i supposed to keep visiting new shops and hoping for the best?
05LJTampa is offline   Quote Quick Reply
Old 03-24-2014, 08:59 PM   #26
Jeeper
 
Join Date: Jan 2014
Location: Port Saint Lucie, Fl.
Posts: 18
Don't know if it's the same shimmy but, my 04 LJ with auto trany does the same thing when it shifts into overdrive. Did it before and after lift and tires. At the same speed. Turn off overdrive and it's gone.

thuggins65 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




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 02:28 PM.



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