is this death wobble or? - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 10 Old 12-25-2009, 08:50 PM Thread Starter
 
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is this death wobble or?

when im going about 65+ and hit a bump just right i get insane shaking of the entire jeep once i slow back down to about 30 it goes away .. what could this be?? its an auto 4 door with a 3.5 skyjacker lift and stock tires...

IS this what people call bump steer? or is this death wobble? and what could it be..the lift was on the jeep when i bought it used..im guessing who ever had it before me had 35s and sold them to trade it in..Im debating on taking it back to the dealer even though the whopping 3 month warranty has ran out about a week or so..something concerning safety and it only being a week or so..im thinking they should fix if it was more then likely like that when they sold it..
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post #2 of 10 Old 12-25-2009, 09:00 PM
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i'd define that as death wobble. check ur bushings, alignment, and wheel bearings. something is wore out to be causing that to happen
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post #3 of 10 Old 12-25-2009, 09:08 PM
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Sounds like death wobble. lots of things cause it..... lots of posts on here regarding too. tire balance, caster, loose bolts or not torqued to spec- or toruqued with tires off of the ground. first thing I woulddo is go through and check all of your bolts on the trackbars and arms for correct torque (and to see if there is damage on the bolt holes). does the lift have adjustable arms or are they stock?

Put some info up here as to what your rig is and there are lots of people who will help.
good luck.

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post #4 of 10 Old 12-25-2009, 10:07 PM Thread Starter
 
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stock control arms BUT i dont think thats the problem im sure it doesnt help it out any...think its something the dealer should take care of ? or think its something i should get the bill on..im gonna check and see if I can see anything wrong tomorrow..i did play around on some snow hills maybe that knocked something loose..as far as i can tell my lift kit just consist of brake lines, 3.5 inch springs, shitty shocks, and that's it..
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post #5 of 10 Old 12-25-2009, 10:27 PM
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since the parts are not oem i doubt they will be required to take care of it. i'd look around for all the previously mentioned ideas and go from there
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post #6 of 10 Old 12-25-2009, 11:30 PM
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Start by having someone turn your steering wheel back and forth (to full lock left and right), while you lie under the front end of the Jeep. Look for any signs of play in the pitman arm/ drag-link/ track-bar.

I personally wouldn't trust most dealerships to deal with this issue, and it likely can easily be diagnosed and fixed by yourself.

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post #7 of 10 Old 12-26-2009, 02:33 PM
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DW at 65MPH is much faster than most people who have DW expereince it. If your jeep was shaking in every direction at the same were it felt like it was going to shake you of the road them yes you had DW.

The hitting the bump is the key, with everything spining and vibrating you put a little motion in the front end them wham!! the movement causes an occilation and you wobble. Something is loose, worn or broken. You go to the dealer and they will replace your steering stabilizer and sent you on your way or tell you to take a hike since your jeep is lifted.

Make sure everything is tight to spec and that you have no warn bushings or broket parts or brakets.

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post #8 of 10 Old 12-26-2009, 03:53 PM Thread Starter
 
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BUT the jeep was bought lifted..i bought it used and already lifted..so even though its aftermarket parts..they should still be responsible for inspecting it.
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post #9 of 10 Old 12-26-2009, 07:43 PM
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Quote:
Originally Posted by jeepingva View Post
BUT the jeep was bought lifted..i bought it used and already lifted..so even though its aftermarket parts..they should still be responsible for inspecting it.
If the dealership installed the lift then they should warranty it, but if it was an individual (before trading or selling to the dealership) that did the lift, then they would have no responsibility to warranty it unless they specified that they would. It should be specified in your contract.

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post #10 of 10 Old 12-26-2009, 09:01 PM
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Lots of good advice here! You probably have something going on that lets a steering component, track rod or control arm move or flex just a little. I just fixed DW (again!) this morning on my JK by tightening up a pinch bolt on my adjustable Terraflex track rod (panhard rod) that was letting it flex just a bit on the threads. I've also had it from worn or too soft bushngs. Here is an article I wrote on DW on my website: http://www.hoodlift.com/Deathwobble.html . Every time I've found and cured it, I ALWAYS found a loose steering componet to be the culprit. Including worn control rod bushings that allowed one side of the axle to flex too much. The JK seems especially prone to it when something is loose. It may just be my choice of tires (35" BFG Mud Terrains) or how the geometry is prone to DW when loose and stressed. Most every time I've found it I've had an assistant turn the wheel back and forth one turn when the Jeep is on the ground and running while I've laid under it and felt for the loose joint. I agree that I would not trust a dealership to find it. You have to have it on the ground and not on the rack when moving the joints so they have stress on them. Good luck!

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