WJ sways during high speeds - JeepForum.com

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post #1 of 18 Old 04-05-2016, 07:01 PM Thread Starter
andersoneric04
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WJ sways during high speeds

I recently noticed that my WJ slightly fish tails, for a few seconds, during high speeds when I accelerate or let of the accelerator. I recently started commuting for work via the Interstate so I never noticed it before. Oddly enough I had it in 4WD during a snow mix and I noticed that it didn't sway for a second during the transition on and off the throttle?? The tires are full, the bearings are good....I recently replaced the rear axle seals/bearings. The tie rods don't have any play yet. I also replaced all the shocks and that didn't help either. Anyone have any ideas? Please advise.

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post #2 of 18 Old 04-05-2016, 07:05 PM Thread Starter
andersoneric04
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WJ tracks straight when on or off the throttle.....its just during the brief transition that it "fishtails" slightly for 1-2seconds consistently
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post #3 of 18 Old 04-06-2016, 09:45 AM
MaineWJ95
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I have this issue in mine as well. I'm lifted 4" on 32" bfg mt
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post #4 of 18 Old 04-06-2016, 10:09 AM
Double E
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Without hesitation and having gone through the same need for a more "planted" feeling, the rear anti-sway bar from Addco is your solution. Look at the OEM sway thickness back there that follows along the back of the rear diff and you'll see what needs to happen.
Normally, replacing the front sway is not going to give day/night results like the rear Addco does.
A DIY swap and iy doesn't even need to be up in the air to do.
e-mail Kolak to get a price on it and the bushings it needs.

2000 Laredo 4.7L Selec-Trac. 177K miles, Leather, 245 tires, tow package, crappy CD changer, full size spare, roof cross-rails & sunroof.
Changes & fixes: Rear Addco sway bar & greasble bushings, upgraded headlights, upgraded tail lights, new hood struts (replaced 2X), new rear hatchglass struts, new radiator (replaced 3X), new oil pressure sending unit (replaced 4X), 2 new speed sensors, 2 new door lock actuators, new ignition key cylinder, chrome front tow hooks, Mobil 1 Synthetic 5/30, Purolator Pure One oil filter, EBC slotted & dimpled rotors, EBC Greenstuff pads, new front shocks (replaced 3X), new rear shocks (replaced 2X), new IRO steering stabilizer, new timing chain cover, new water pump, thermostat, new thermostat housing, new high pressure power steering hose, Michelin-X radials, new sunroof assembly, new single-piece lug nuts, new exhaust manifold studs & gasket on driver's side, new Durango alternator. Jeepforum.com sticker, Visit cobaltboatsforum.com when you can!
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post #5 of 18 Old 04-06-2016, 10:29 AM
steve_80
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Check your rear sway bar links?
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post #6 of 18 Old 04-06-2016, 05:40 PM Thread Starter
andersoneric04
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I checked the rear away bar and all the linkages are tight. Is this a part that could wear out after 163,000 miles? Thanks for the help so far guys.
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post #7 of 18 Old 04-06-2016, 11:34 PM
Globetrotter
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2003 WJ 
 
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Addco sway bar is always a good idea but I think your problem is more related to worn A frame bushes and ball joint.
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post #8 of 18 Old 04-07-2016, 07:34 AM
4WDlifeform
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Quote:
Originally Posted by Globetrotter View Post
Addco sway bar is always a good idea but I think your problem is more related to worn A frame bushes and ball joint.
X2. My similar experience ended up being lower control arm bushings. When hitting the throttle, I had to correct the steering slightly, then re-correct when letting off. Was solved with new lower control arms from IRO. I later replaced the A-arm bushings and ball joint with even more improvement.
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'04 WJ 4.0 285k 2" Coils 255/70 AT on JK take-offs
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post #9 of 18 Old 04-08-2016, 07:15 AM
Jigsaw404
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mine was also the lower control arm bushings as well, take the arm off one by one, and check the bushings. You'll see the sleeve is not attached to the rubber anymore, then you'll know its the problem. Just remember to re-tighten the arms with jeep on the ground and level.

I also have the addco, replace the arm and then see if you want to upgrade the rear sway bar.
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post #10 of 18 Old 04-09-2016, 01:38 PM Thread Starter
andersoneric04
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I replaced both stabilizer bar linkages this morning and got the jeep going on the interstate........ Problem solved thanks a lot guys I really appreciate it
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post #11 of 18 Old 04-10-2016, 11:55 PM
BrewNut
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I had the same issue on my 99 and the A-arm ball joint and bushings were shot. Bought a new A-arm and ball joint and it fixed the wandering during acceleration and deceleration.

I see you got it fixed but I would still inspect the A-arm even though it's a pain to get to. If other parts are worn back there, the nice shiny parts you put in are not going to last too long.
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post #12 of 18 Old 04-11-2016, 03:23 AM
LI Lefty
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Installing the Addco 1" rear sway bar and IRO links has transformed my '03. I've also replaced the upper control arm and bushing but the Addco made the biggest difference.
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post #13 of 18 Old 04-12-2016, 01:20 PM Thread Starter
andersoneric04
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Are you guys replacing the rear control arms?
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post #14 of 18 Old 04-13-2016, 11:40 AM
Jigsaw404
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for the LCA's I did, easy to do, pretty cheap to get and you don't have to deal with pressing in and out oval bushings.
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post #15 of 18 Old 04-13-2016, 11:46 AM
JohnnyBertone
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I have the same problem but it's front end related, and more specifically the motor mounts. Whenever I accelerate (punch it) the whole front end pulls up and to the right, and when I let off all the way the front end goes back down and to the left. I know it's from the inertial force from the motor doing a 45 degree turn though. Just a thought check your motor mounts because the heavy pig 4.0 can throw its weight around quite a bit
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