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Old 03-28-2012, 09:30 AM   #1
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Death wobble?!

Free installing my BL and MML I am getting some DW at anywhere from 40 to 70 MPH. What causes this and how can I fix it? I am worried the dame wheel is going to fall off!

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Old 03-28-2012, 09:30 AM   #2
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Damn auto spell not free but after!

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Old 03-28-2012, 09:33 AM   #3
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Do you have a suspension lift?
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Old 03-28-2012, 11:00 AM   #4
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Not yet I have a pro comp BB. With shocks and stablizer
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Old 03-28-2012, 11:02 AM   #5
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The bb was on before the bl?
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Old 03-28-2012, 11:03 AM   #6
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Yes and no problems until the Bl
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Old 03-28-2012, 11:15 AM   #7
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Something tells me driveline angle, but the most common cause is a bad or loose front track bar.
I would take the track bar off at the axle so you can check for play in the joint at the frame side. Also check the bushing quality. If all is good on the frame side reconnect the axle side and tighten it down as tight as you can.
I only suggest because this is free and can determine if you've got the most common cause first.
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Old 03-28-2012, 11:25 AM   #8
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Ok, might be a silly question. Do you have a tc drop spacers installed?
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Old 03-28-2012, 11:33 AM   #9
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Nope, I have a belly up and a sye. I'm also in an lj. Do you have spacers?
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Old 03-28-2012, 01:16 PM   #10
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Quote:
Originally Posted by oIIIIIIo
Ok, might be a silly question. Do you have a tc drop spacers installed?
No I have a MML installed.
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Old 03-28-2012, 01:18 PM   #11
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Quote:
Originally Posted by jrussblues
Nope, I have a belly up and a sye. I'm also in an lj. Do you have spacers?
If you mean wheel spacers, no still stick rims till this weekend I hope to put new tires and wheels on but want to resolve this issue first.
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Old 03-28-2012, 01:20 PM   #12
Knows a couple things...

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Describe in detail the symptom you are describing as Death Wobble. Does the Jeep feel like it has gone out of control and is shaking so violently everything is a blur and won't stop until you get the Jeep slowed down to where it is nearly stopped?

Or is the steering wheel just shimmying badly?
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Old 03-28-2012, 03:24 PM   #13
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Quote:
Originally Posted by Jerry Bransford View Post
Describe in detail the symptom you are describing as Death Wobble. Does the Jeep feel like it has gone out of control and is shaking so violently everything is a blur and won't stop until you get the Jeep slowed down to where it is nearly stopped?

Or is the steering wheel just shimmying badly?
I can lean out and see the front tire wobbling back and forth and the steering wheel is also shimming badly, Its not the apocalypse lol but pretty scary! I have to slow down to get it to stop but it occurs almost constantly from 40 MPH and up. I cant see the other side obviously but it feels stronger on the drivers side. I finally found a good deal on tires that have almost no miles (still nubby!) Mickey thompson MTZ 33/1250 and MT classic 2 in all black (not totally happy with all black) but 1100 for all was very hard to pass up. Plus they are local so I can get it done in time to pass inspection on friday! But really want to fix this issue before installing the new tires out of fear they will fly off and kill us all!
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Old 03-28-2012, 03:52 PM   #14
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At 40 mph constantly it's typically the front track bar. I had the same issue with mine. Once when I didn't tighten the bolt down on the axle side all the way. Once, when the nut tab backed off and again when the bolt wouldn't tighten all the way because I had a crappy bolt temporarily on it. If you can push through about 8-10 mph it will likely go away, I don't recommend that though. I would look to see what's wrong with the track bar as advised before. Bad tires usually start to give problems at higher speeds. The only other thing to double check is lug nuts.
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Old 03-28-2012, 04:21 PM   #15
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Quote:
Originally Posted by jrussblues
At 40 mph constantly it's typically the front track bar. I had the same issue with mine. Once when I didn't tighten the bolt down on the axle side all the way. Once, when the nut tab backed off and again when the bolt wouldn't tighten all the way because I had a crappy bolt temporarily on it. If you can push through about 8-10 mph it will likely go away, I don't recommend that though. I would look to see what's wrong with the track bar as advised before. Bad tires usually start to give problems at higher speeds. The only other thing to double check is lug nuts.
Thanks for the suggestion I will check it out as soon as I can.
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Old 03-28-2012, 04:25 PM   #16
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Old 03-29-2012, 07:31 AM   #17
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Check track bar/install new one. Check your brakes, my rotors were warped and calipers were no good. Also get wheels balanced and aligned. I would start with these. Worked for me.
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Old 03-29-2012, 08:18 AM   #18
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Is it odd that this started after BL and MML? How do they relate or just coincidence?
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Old 03-29-2012, 08:21 AM   #19
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Possibly, could be from yanking around on the jeep, if you put it on a lift, testing flex afterward, stuffing a wheel, anything to cycle it or maybe it just finally wore out.
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Old 03-29-2012, 08:27 AM   #20
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Quote:
Originally Posted by jrussblues
Possibly, could be from yanking around on the jeep, if you put it on a lift, testing flex afterward, stuffing a wheel, anything to cycle it or maybe it just finally wore out.
Yea that's all I could figure as well, gonna look into it tonight
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Old 03-29-2012, 11:42 PM   #21
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nothing seems loose
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Old 03-30-2012, 05:04 AM   #22
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Do a dry steering test and see which parts are not working as well as they should be. Check the tire pressure in the front tires. Try switching your rear tires with your front tires. Check the torque on your upper and lower track bar bolts, and check the condition of your control arm bushings, TRE's, unit bearings, ball joints, pitman arm, steering gearbox lash, etc...
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Old 03-30-2012, 05:46 AM   #23
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I'm not a mechanic yet! But I checked every bolt that I could find related to the steering. Tires are inflated fine but badly worn. I'm getting new tires and wheels installed today so maybe that will help. I'm worried it may hurt since the tread is so much more agressive but we shall see.
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Old 03-30-2012, 06:00 AM   #24
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my death wobble was due to a wore out track bar
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Old 03-30-2012, 06:19 AM   #25
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Do I need to worry about wheel falling off due to this?
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Old 03-30-2012, 11:38 AM   #26
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Death Wobble and a bb

Quote:
Originally Posted by Drock1979 View Post
Free installing my BL and MML I am getting some DW at anywhere from 40 to 70 MPH. What causes this and how can I fix it? I am worried the dame wheel is going to fall off!
With your '06 Rubicon, when you installed a budget boost, you changed more than you probably realized. (I drive an '06 Rubicon as well -- Happy Trails (my Jeep)
for details).
What you describe leads me to believe your steering and suspension are wearing to the point that Death Wobble was just around the corner... you just accelerated it with the lift.
To learn about DW and how to diagnose it go to: Death Wobble
I have worked on several rigs with this problem and know it's a bugger to find the "real" problem because too often it is not just one thing. The article will give you all (and more) the information you need to fix it.

Good luck and Happy Trails.
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Old 03-31-2012, 01:31 PM   #27
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I didn't find anything loose or that appeared worn and had a shop check things when they installed my tires and they failed to find anything. The new tires and wheels either fixed it somewhat or are doing a good job of covering it up for now. I'm amazed how well the mtz rides so far. Very smooth ride and not much noise at all and look mean as hell!
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Old 03-31-2012, 01:40 PM   #28
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I just had the death wobble in my JK with the kids in the car. I thought the wheel was falling off and the steering wheel wobbled back and forth. New track bar and tie rod and it is all good $400 later (i paid a shop). Mechanic thinks it was cause I put the 2" spacer lift in and didn't get it aligned afterwards.
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Old 03-31-2012, 02:35 PM   #29
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Glad to hear you got it taken care of, Just hoping mine is ok too!

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