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Unread 01-30-2011, 04:36 PM   #46
planman
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Text added to first post:

I'll start out by explaining that Chrysler desided to use a 14 mm trackbar bolt, with a trackbar bushing sleeve designed for a 9/16" bolt, and the trackbar bracket bolt holes are somewhere around 15-16 mm large. This is a sure recipe for DW if the trackbar bolts are not properly torqued and periodically re-torqued to 125 ft. lbs.

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Unread 01-30-2011, 06:13 PM   #47
RockyClymer
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You are correct - mine is a 14mm....sry. I will delete orig post.
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Unread 01-31-2011, 06:07 PM   #48
swtmdmboo
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Hey planman -

I'm back (again) and have been without the jeep for 3 weeks. Last week, we went upon the suggestion of the mechanic and had a bracket made for the track bar so that it would level it out. Mechanic said he thought it was "bump steer" and the bracket would help. They said the jeep would be ready last Saturday. We drove the 2+ hours to pick it up and discovered that it had another issue. Upon accelleration, the jeep would pull right, then after shifting (manual tranny) it would go back left. Took the poor jeep back to the shop and were told that whomever test drove it didn't notice the pull (???!!!).

What I need to ask is would doing half of a high steer kit (the track bar bracket) cause the pull upon accelleration?

Also - if that is the case, would changing the angle of the pitman arm solve the problem?

thanks again -
swt

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3" lift and stock wheels/tires

Replaced so far: lower control arms, track bar (front - adjustable forged Terraflex with a bracket/rear adjustable), tie rod long and short, shocks (all), pitman arm, ball joints (upper and lower - OEM), sway bar links, and the long steering tie rod end that connects to the pitman arm, center link for tie rod, quick disconnect links.
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Unread 01-31-2011, 08:14 PM   #49
Coleoneps
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Im having this issue. As soon as I hit 50Mph on the nose it wobbles. I brought it to my dealership last Friday and they replaced the steering dampener. Later on that night I noticed it was back , right at 50mph. It wasnt quite as extreme. The first time it happened I thought it was a 9 on the richter scale or something. Its down to a 4 or 5 now id say. Im bringing it back to the dealership tomorrow morning and I am going to have the mechanic take a ride with me to help diagnose the issue. Hopefully they can solve the problem so I dont further damage my 08 Jk.
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Unread 01-31-2011, 08:49 PM   #50
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Quote:
Originally Posted by Coleoneps View Post
Im having this issue. As soon as I hit 50Mph on the nose it wobbles. I brought it to my dealership last Friday and they replaced the steering dampener. Later on that night I noticed it was back , right at 50mph. It wasnt quite as extreme. The first time it happened I thought it was a 9 on the richter scale or something. Its down to a 4 or 5 now id say. Im bringing it back to the dealership tomorrow morning and I am going to have the mechanic take a ride with me to help diagnose the issue. Hopefully they can solve the problem so I dont further damage my 08 Jk.
Read the first post. There's no reason to bring it back to the dealer since they know far less than you will after reading and comprehending the first post. Do the work and cure your wobbles. A speed-sensitive wobble is almost always a tire balance issue. Rotate the tires and try again. You'll probably notice a difference, positive or negative. If the problem persists, get the tires road force balanced by a good tire shop. If you have steel wheels, don't expect to ever get rid of slight wobbles.
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Unread 02-01-2011, 03:56 PM   #51
bkobus
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How common is this?

I just bought my first new jeep the other day..
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Unread 02-01-2011, 04:43 PM   #52
swtmdmboo
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Quote:
Originally Posted by bkobus View Post
How common is this?

I just bought my first new jeep the other day..
Not sure - this is my first jeep and the issue started about 23,000 miles into it after hitting an extremely rough pothole. My parents own an older Wrangler Sport and have had no issues.
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Unread 02-01-2011, 05:43 PM   #53
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Quote:
Originally Posted by bkobus View Post
How common is this?

I just bought my first new jeep the other day..
A very small percentage of jeep owners ever experience DW.

However there are so many jeep owners, that DW does come up.

The design of the JK front trackbar bracket bolt holes, bushing bolt sleeve, and bolt size requires periodic maintenance. The bolts should be torqued to spec (125 ft lbs) at every oil change interval and after every major wheeling trip.

If you ever experience DW, immediately diagnose and fix the source of the problem. Don't make the mistake of allowing multiple DW occurances.
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Unread 02-01-2011, 07:03 PM   #54
swtmdmboo
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Planman still need your expertise

There was a post 5 posts up asking about doing a partial high steer thing, we only added a bracket to raise the height of the track bar, and after doing that, it steered really weird pulled right when accelerating, and then would go back left as soon as you let off the gas, the question is in doing only a partial high steer kit, would that cause that symptom, and we are having a dropped pitman arm added tommorrow we are hoping that there after the whole problem will be fixed. long posts lots of parts replaced. Thanks for your time, we are trying to make sure the mechanic is not just taking our money. any help would be greatly apprecated. maybe one day we will be as comfortable with this as the rest of Jeep owners are.
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Unread 02-01-2011, 07:15 PM   #55
planman
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Quote:
Originally Posted by swtmdmboo View Post
There was a post 5 posts up asking about doing a partial high steer thing, we only added a bracket to raise the height of the track bar, and after doing that, it steered really weird pulled right when accelerating, and then would go back left as soon as you let off the gas, the question is in doing only a partial high steer kit, would that cause that symptom, and we are having a dropped pitman arm added tommorrow we are hoping that there after the whole problem will be fixed. long posts lots of parts replaced. Thanks for your time, we are trying to make sure the mechanic is not just taking our money. any help would be greatly apprecated. maybe one day we will be as comfortable with this as the rest of Jeep owners are.
Yes. If you modify the trackbar angle, you have to correspondingly modify the angle of the drag link or you will get bumpsteer.

The best way is with a drag link flip kit instead of with a drop pitman arm.

However, a drop pitman arm is much less expensive.
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Unread 02-01-2011, 07:36 PM   #56
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[QUOTE=planman;10899018]Yes. If you modify the trackbar angle, you have to correspondingly modify the angle of the drag link or you will get bumpsteer.....QUOTE]

Thanks for replying. Wish us luck.
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Unread 02-21-2011, 06:00 PM   #57
wmartinhickman
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The Death Wobble

This morning on my way to work I apparently hit a hole or small ledge on the entrance to a bridge going 50-60mph. It was all I could do to hold the steering wheel and I guess by instinct I hit the clutch and rolled to a stop on the interstate; luckily it wasn't crowded. I have about a 4" lift and 33x12.5 Mickey Thompson's. I also have a SkyJack stabilizer. I assumed that it was due to my tires being almost bald and warn out, but I think this thread has given me the answer. Thinking back I remember noticing my jeep seeming to shake for a good distance after going over a really rough part of road at low speeds. I assume those lower speeds didn't allow it to amount to the violence that I felt today. After the first incident this morning it would restart after a bump or with a lot of speed and I would have to come back to a stop. I am just now getting into working on my jeep and since it never breaks I haven't had much opportunity, but I'm going to give the list in post #2 a shot and see what happens. I really appreciate everyone who post on this forum! You guys who know a lot and those who know a little, yet have experiences to share, really help people. I can't imagine how much money and time this thread has saved me!

Thanks to all of you!
Martin
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Unread 02-21-2011, 06:09 PM   #58
wmartinhickman
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The Death Wobble

This morning on my way to work I apparently hit a hole or small ledge on the entrance to a bridge going 50-60mph. It was all I could do to hold the steering wheel and I guess by instinct I hit the clutch and rolled to a stop on the interstate; luckily it wasn't crowded. I have about a 4" lift and 33x12.5 Mickey Thompson's. I also have a SkyJack stabilizer. I assumed that it was due to my tires being almost bald and warn out, but I think this thread has given me the answer. Thinking back I remember noticing my jeep seeming to shake for a good distance after going over a really rough part of road at low speeds. I assume those lower speeds didn't allow it to amount to the violence that I felt today. After the first incident this morning it would restart after a bump or with a lot of speed and I would have to come back to a stop. I am just now getting into working on my jeep and since it never breaks I haven't had much opportunity, but I'm going to give the list in post #2 a shot and see what happens. I really appreciate everyone who post on this forum! You guys who know a lot and those who know a little, yet have experiences to share, really help people. I can't imagine how much money and time this thread has saved me!

Thanks to all of you!
Martin
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Unread 02-21-2011, 07:32 PM   #59
07BlackOps
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My DW was caused by 2 things. A very worn drag link end, and 2 ball joints shot. Put 4 brand new ball joints in brand new drag link, alignment and new rims and tires and no issues period now. Even got a little better gas mileage, hell 3mpg more then I was before!
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Unread 02-22-2011, 11:22 AM   #60
wmartinhickman
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I checked mine out last night and more indepthly today and found an obviously busted bushing at the drag link head and the right and left knuckles. There is lots of vertical movement at the head of the drag link. The driver's side sway bar also moves up and down about a 1/2inch when the steering is jerked back and forth quickly and it seems to not be perpendicular to its mount. The bolt of the driver's side sway bar spines easily, but I can't get the nut to budge tighter or looser! Also, the pitman arm and drag link head don't seem to be lined up right. The bushing at the on the frame mount of the track bar is very pinched on the backside. I'm planning on fixing this myself; however, this will be my first attempt doing anything like this. I'm confident I'll figure it out and all will be well, but does anyone have suggestions on where to buy parts and tools??? Here are some pics of what I'm talking about. I think I have some good examples of pinched and busted bushings and other bad parts.
img_9632.jpg   img_9633.jpg   img_9634.jpg   img_9635.jpg   img_9637.jpg  


Last edited by wmartinhickman; 02-22-2011 at 01:24 PM.. Reason: new info
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