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Death Wobble - need advice/help asap

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Old Sep 28, 2008 | 10:33 PM
  #11  
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Originally Posted by voodoojk
you read it out of order. up to the point of the DW, my front end would shake on every hard bump like DW was starting but it subsided. The jeep drives smooth as could be on normal road.This time..when i hit particularly hard on a ridge in the pavement,the entire jeep started to shake, the front end felt like it was coming off the ground, the tires were making loud chirping sounds on the road and everything in the jeep went flying all over. I was being shaken around so much my hat flew off my head.the steering wheel all but ripped out of my hand. It was visibly violent enough that the tractor trailer on my ass locked up his brakes and smoked all his trailer tires while i went bouncing onto the shoulder and came to a stop. I let traffic go.. pulled back out and smooth as ice. Its not a wheel balance problem. it is DW. dont doubt it.
oh yeah, that does sound like DW. as always, i would start with the number one cause of DW and that is your track bar. pull it off, inspect your bushings as well as the mounting holes and then reinstall it and make sure to tighten up the bolts to 125 ft. lbs of torque with the weight of your Jeep on the ground.
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Old Sep 29, 2008 | 12:36 AM
  #12  
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I know this might sounds weird approach. But Also don't forget to double check for any bent, hairline crack(s) on all of the factory mounting brackets, such as track bar brackets, control arm mounts and etc...


What type of lift components have you installed with the lift kit you bought? By doing so we might be able to narrow down the possibilities of defects, and etc...


Sometimes there can be a lose bushing ( even it does not seems worn) I have have also seen defected hem-joint(newly purchased) that appears normal with bare eyes.


ps. also check your wheel lugs as well...

Last edited by MBATF; Sep 29, 2008 at 12:47 AM.
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Old Sep 29, 2008 | 04:54 AM
  #13  
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i will check everything out again. The trac bar is brand new and is the HD Teraflex adjustable.

The lift was the Teraflex 3" so i got coils, adjustable trac bar (front) and rear bracket for the bar and the front discos.

This is kinda upsetting to me...i lowered trucks in the past so much that they were rendered useless. now...i grew out of that and wanted a functional vehicle and was scared to touch it in fear of this type of thing happening. After a years worth of waiting i decided to lift it and i am back a square one with a problem child. My front axles been replaced under warr, my trans just got rebuilt under warr now this. this jeep is just plain letdown so far. im trying to enjoy it but to no luck. Bad luck or no luck at all!! lol

Last edited by voodoojk; Sep 29, 2008 at 05:47 AM.
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Old Sep 29, 2008 | 05:58 AM
  #14  
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what MBATF said. one thing i have found to be useful is to have someone turn your steering wheel a bit back and fourth just a bit with the engine off so that the power steering isn't assisting you. while they are doing this, look under your jeep and check your drag link, track bar and tie rod to see if there's any shifting. if you have a loose bushing or TRE, it'll show up here. if everything is on tight, nothing should be shifting.

i should also note that one episode of DW is enough to cause all your bolts and nuts to loose up and cause mounting holes to wollow out so even if you thought you had everything on tight, check them again.
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Old Sep 29, 2008 | 07:00 AM
  #15  
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What psi do your tires have? Did you get an alignment done?
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Old Sep 29, 2008 | 09:30 AM
  #16  
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30 PSI in the front and 35 in the rear i think...on stk wheels and tires. i did not do an alignment yet as i am waiting for new wheels and tires. Can i align thi scorrectly to prevent DW without adjustable control arms?
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Old Sep 29, 2008 | 09:39 AM
  #17  
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Originally Posted by voodoojk
30 PSI in the front and 35 in the rear i think...on stk wheels and tires. i did not do an alignment yet as i am waiting for new wheels and tires. Can i align thi scorrectly to prevent DW without adjustable control arms?
psi shouldn't make a difference when it comes to DW. likewise, if you do not have adjustable control arms, there really is little that an alignment shop can do other than recenter your steering wheel. it is possible that your toe is off and if that's the case, that can instigate DW and it is also something an alignment shop can fix - but then, so can you with just a tape measure and a wrench. still, i would focus your attention to your track bar. also, being that you have had more than one episode of DW, you really need to re-check everything else.
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Old Sep 29, 2008 | 09:43 AM
  #18  
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Why uneaven tire presure do you have a load in the back?
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Old Sep 29, 2008 | 10:43 AM
  #19  
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Originally Posted by Dwikto
Why uneaven tire presure do you have a load in the back?
thats what the sticker on the door calls for..more in the rear tires then in the front im guessing for load.
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Old Sep 29, 2008 | 11:14 AM
  #20  
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I have a diesel 4 door, had no problems until about a month after i lifted it, hit a bump at 40 mph, and i thought i had lost my wheel nuts of my wheels, a real shock.

Lift, OME HD 2" springs, and shocks, and OME steering damper, the violent shaking blew the damper, and it turns out on of the front shocks had gone sloppy as well, not good for a 99% tarmac Jeep.
Replaced original damper, and put original shocks back on, still got DW, put original wheels and tyres, and stock springs back on, still got DW, had wheels balanced, and all caster, toe in alignment laser aligned, all spot on, still got DW.
Read no amount of forum, and site advice, all which point to different things, did all the bolts, wobble steering looking for loose moving joints, nothing, except i feel there is play in the output shaft of the steering box (Jeep wont accept it), and the front axle swivels travel up and down 1.5-2mm, which jeep say is normal?.
Then i read, tyre pressure can cause it, my door plate says 35psi, front and rear, so dropped front to 28psi, and now no DW. Put OME lift back on, and no DW, havent put Procomp wheels and tyres back on yet, but the differance from 35-28psi to the steering is shocking.
I feel it is still to light, and will be making some adjustable bottom arms, to increase the slotted brackets 4 degree caster upto perhaps 6-8 degrees.
And have had just delivered today a Rough Country twin steering damper kit, but as said this will mask the problem, not cure it.
1. make sure everything is tight
2. get it balanced, and laser aligned, after a lift should be done anyway,
3. try tyre pressure lowering
4. if all fails, tall tree, short rope.
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