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Old 11-09-2009, 08:51 AM   #1
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i need help with 07 jk

i have 07 jk thats shakes out of control at highway speeds. only has 40k on it and is completely stock. i replaced steering shock with rancho 1 month ago and it was good untill now. all steering and ball joints good can you help?

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Old 11-09-2009, 09:11 AM   #2
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Tires balanced properly? Probably first thing I would check...

Any other details? Only shakes at highway speeds? when do you start to notice it? 40mph? 50? 55? etc.

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Old 11-09-2009, 10:33 AM   #3
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tires are good just rotated, 65mph is smooth untill you hit a bump, then it wobbles. you have to come almost to complete stop jeep is like new still,no offroad just driven
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Old 11-09-2009, 12:15 PM   #4
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Quote:
Originally Posted by xjrob View Post
tires are good just rotated, 65mph is smooth untill you hit a bump, then it wobbles. you have to come almost to complete stop jeep is like new still,no offroad just driven
Tires were just rotated? Were they balanced? If not, that might be your issue.
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Old 11-09-2009, 12:52 PM   #5
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Depending on how long youve driven on your tires there can be some wobble/noise alone for a hundred or two hundred miles until theyve kinda broken after a rotation. How many miles did you go before the rotation? I would also make sure they were balanced properly.

I was actually just reading about 5 wheel rotations and some people get some wobble for a short period of time after rotating their tires.
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Old 11-09-2009, 04:28 PM   #6
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it was doing it before the rotation and they were balanced, its not balance problem more like the "death wobble" but its not lifted,and only has 40k on it
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Old 11-09-2009, 09:51 PM   #7
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Could it be something caused by maybe hitting a pot-hole and busting one of the belts or separating it and causing the tire to not roll properly? That movement would be amplified by the suspension until it feels like death wobble. I would think this could be done when aired down on the trail and over flexing the tread as well. Just some things to think about. If it is that, a tire specialty place should be able to spin it up and check it.
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Old 11-10-2009, 09:39 AM   #8
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Definitely have it checked out! Sometimes, when Tire Companies Rotate Tires, they fill your Tires with Air. May be that they may have over-inflated them. Check your Tire Pressure, and make sure it's the same as what's on the Door Jamb, if you're running the Stock Tires/Same Sized Tires.

I know my area Firestone has a habit of filling Tires with air, and NEVER checking the Air Pressure. They just pump in air, until the Tire thumps like a Watermelon. No two Tires will have the same Air Pressure, after they're done!

One other thing to mention, other than the typical Balancing already mentioned above, is, HOW did they do the Rotation? Did they switch them Back-To-Front, or did they Cross them (X), Right Side-To-Left Side? If they're Rotated incorrectly, then your Tread Wear is now Reversed, which can cause wobbling and erratic movement.

Best of Luck!

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Old 11-10-2009, 11:29 AM   #9
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i have checked air press rotation was front to back, i dont feel its a tire problem because you can drive it for days and it wont happen untill you hit the right bump at the right speed,usually 65 on highway, and to get it to stop shaking you have to slow down or come to complete stop
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Old 11-10-2009, 12:30 PM   #10
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check the track bar bolts.
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Old 11-10-2009, 03:47 PM   #11
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just checked track bar bolts not loose, no play in the bushings everything is tight
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Old 11-10-2009, 10:18 PM   #12
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Called "death wobble". Do a search on any JK site you can find. Some went with larger steering damper, some found worn ball joints, some worn track bar bushings, worn control arm bushings. All kinds of things
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Old 11-11-2009, 07:58 AM   #13
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I had the same problem in My 07 JK unlimited which is bone stock at about 39k miles. It is definately not DW that is causing it, sometimes I would hit a bump and it would shake so bad you could here the tires skipping. I would have to slam on the brakes and come to a complete stop just to get control back. I took it to jeep and they told me the tires needed balanced. Then It did the same thing right after I left there. So i went and took the shop manager for a ride and showed him what it was doing since I knew a spot where it did this fairly regularly. They kept my jeep for 4 weeks and replaced almost everything on the front from the brakes to the suspension and never could tell me why it did this. After I got it back the second time it still did the same thing, so I just took it slow when I knew a bump was coming up. Then one day it suddenly went away just as quick as it started. It has me completely baffled and evidently jeep also.

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