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View Full Version : DW lots of searching done, lots of parts replaced


grand600
February 20th, 2012, 08:43
Hey guys got an 88 cherokee limited 4x4 4.0 136,000 miles on it, stock suspention. have been dealing with DW for a while. Parts replaced, Trackbar, tires, upper and lower 4 link bushings, shocks. Alignment was just done tie rods and all other steering components seem to be in good shape(no Play). Almost forgot new rotors and pads, and all new U-joints even knowing this probably would have nothing to do with DW. Now here is what I have found. The trackbar is an autozone unit with under 10k miles on it. But it is my main suspect for the DW I keep getting. The track bar has a factory looking rubber bushing in it. If I get some one to move the steering wheel back and forth while being under the truck looking at the track bar bushing there is a solid 1/2" of back and forth movement/compression in that bushing. No Play in it, just seems like a very weak bushing. I have seen polyurethane bushings for this. Do they work? I have also looked to try to find a track-bar with a heim joint or the like with less movement. Where can I find these, and do you think I may have found the cause of the DW. Thank you for the help!!

Tim_MN
February 20th, 2012, 08:56
If you have excessive movement at the upper track bar joint you probably need a new one. You can try to tighten down the mounting nut. Make sure the tapered hole in the frame bracket has not become enlarged.

Make sure the bolt hole on the axle end mount is not enlarged. Check the torque on the axle end bolt. A poly bushing in the axle end joint will probably reduce the amount of movement there.

ParadiseXJ
February 20th, 2012, 09:01
The track bar should not move at all.

A poly bushing would be stiffer...as in stiff and would allow less, if any movement. Take the bolt out and look at the mounting hole. It's quite common to have the mounting hole wallow out in to an oval, or worse. That makes whatever bushing you have in there useless, you'll never tighten it with NO play.

The best fix I've heard of is to weld a heavy washer over the damaged hole...to make the hole round again, replace the bolt with a heavier bolt. Make sure it's torqued to specs, if that's actually the problem. The other problem is that it's an AutoZone track bar. period, enough said. I've seen cheap track bars fail in less than 5K miles.

grand600
February 20th, 2012, 09:02
The taper "tie rod" type end is fine and tight. The other end where it bolts to the axle with the rubber bushing is where all the movement is at.

Tim_MN
February 20th, 2012, 09:39
Check the condition of the axle bracket hole, repair if needed. Correctly torque the axle bracket bolt, consider replacing the axle end bushing with poly.

I used 1/4" plate on mine.

.
http://www.fototime.com/361665E1BF168BD/standard.jpg

grand600
February 20th, 2012, 12:43
The mounting holes and metal bolt hole in center of bushing are nice and round. No slop in bolt to hole clearance. Bushing looks OK in appearance. If you take a standard Phillips screwdriver and put it into the bushing the rubber is really weak and moves substantially. Mushy rubber. What is a Good replacement track bar? or should I just try the $10 poly bushing first?
Thanks fellas
Jon B

XJ4MEPLZ
February 20th, 2012, 14:05
The autozone trackbar should have a "lifetime" warranty. Cheap fix to just get it replaced and see how it handles.

xj_maniac_newb
February 20th, 2012, 14:48
Have you had your tires balanced lately? It's very easy to mistake unbalanced tires for DW... and often unbalanced tires will cause you to have actual DW. Just something you could check.

grand600
February 20th, 2012, 15:57
Tires are new

grand600
February 20th, 2012, 15:59
Yes autozone track bar does have lifetime warranty, but id rather fix it right this time with a quality track bar so I dont have to put another one on in under 10k miles

birchlakeXJ
February 20th, 2012, 16:22
Lots of track bar options out there. I just installed a MOOG on mine which resolved my death wobble.

grand600
February 20th, 2012, 16:47
What is available in aftermarket track-bars for stock suspension, but is a far superior unit?

Tim_MN
February 20th, 2012, 19:28
Any double shear track bar that comes with a new frame bracket is superior.

Iron Rock Off Road has an excellent DS track bar. Call them, they will tell you if it can be used as is for a stock Cherokee or if there is enough threads to trim it down for a stock XJ. They may even be able to make you a shorter one for a stock XJ.

grand600
February 21st, 2012, 04:31
Thank you Tim MN. is that the only option out there? Thanks again

grand600
February 22nd, 2012, 15:51
does anyone here know of a good track bar for stock suspension??? Thanks fellas

Pelican
February 23rd, 2012, 07:41
BirchlakeXJ mentions MOOG in post #11 above. One source for this is RockAuto. I recently thought I was going to need a track bar and as I recall, found the best combination of price/shipping at Amazon. Search for Moog under suspension parts as they don't refer to this unit as a track bar.

Alaskan89XJ
February 23rd, 2012, 09:52
http://www.kevinsoffroad.com/ Cured my DW, and enhanced the front end for pot holes, washboard ice/hard pan, etc. Very happy with the products, but more-over customer service. Never telephoned, just e-mails, and product(s) came quickly.

Gave you their home page link so as you can gain a solid foundation on their products, and why they carry them, and how good they will be for your XJ. After much comparisons, i.e; product correctness, quality, where made, prices, etc., I ended up with a majority of my front end parts through them, lol, one stop shopping as it were.

In addition I went with ARB/Old Man Emu throughout the suspension areas.., except for Kevin's site's recommendation to go for a less expensive, but adequate steering damper.

grand600
February 24th, 2012, 13:59
I am going to try a energy suspension poly bushing and see where that leads. It seems nobody make a good aftermarket bar unless you have a minimum 2" lift. So I may add a 2-3" lift then get a nice adj bar to go with it. So coil spacers and add a leaf here I come. Id do a better lift but this vehicle sees very little off road, so I don't need rock crawl flex.'
Thanks for all the reply's fellas. Ill keep ya posted

yossarian19
February 24th, 2012, 16:58
You don't need an after market bar, I think you are making a good call by replacing that bushing with a poly unit.

Something frequently overlook w/ death wobble is that the steering box itself may have excessive play, allowing the pitman arm to oscillate & the suspension to DW. Check your steering box for excessive play - do you have an over-large dead spot / wandering in the wheel? Have somebody turn the wheel back and forth while you watch the movement of the input shaft in relation to the pitman arm. There should be almost zero lag / slop in there.

Don't add a cheap lift to your rig just to get an adjustable bar. You don't need an HD bar, you need a new bushing & possibly further diagnosis / repair. The factory track bar in my rig was tight for 100K miles. If you don't 'wheel the rig enough to need a lift, keep it stock with quality parts and you'll be MUCH happier with the performance & overall quality of your rig.

Ecomike
February 25th, 2012, 13:02
You don't need an after market bar, I think you are making a good call by replacing that bushing with a poly unit.

Something frequently overlook w/ death wobble is that the steering box itself may have excessive play, allowing the pitman arm to oscillate & the suspension to DW. Check your steering box for excessive play - do you have an over-large dead spot / wandering in the wheel? Have somebody turn the wheel back and forth while you watch the movement of the input shaft in relation to the pitman arm. There should be almost zero lag / slop in there.

Don't add a cheap lift to your rig just to get an adjustable bar. You don't need an HD bar, you need a new bushing & possibly further diagnosis / repair. The factory track bar in my rig was tight for 100K miles. If you don't 'wheel the rig enough to need a lift, keep it stock with quality parts and you'll be MUCH happier with the performance & overall quality of your rig.

I agree. I have all autozone junk on my stock, and have solve DW on all three with stock parts, just finding the bad part. And in 9 years I have yet to replace an AZ front end part.