YJ help bump steer - JeepForum.com
 
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post #1 of 15 Old 10-23-2013, 04:20 PM Thread Starter
Black7
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YJ help bump steer

I'm the new owner of a 95 YJ with a 4" lift. My previous jeep exp was with a 90 XJ that I mess dearly. The problem I'm having with the YJ is scary bump steer. I've never had a lifted jeep before so I need help on how to fix this. It get damn scary at 40-45mph. This is going to be my winter only truck so off roading isn't that important to me. Not crashing on the way to work is. I got the truck for a good price and it has my fav engine and trans combo 4.0 and a 5 speed like my XJ had. The tires are also like new 33 bfgs. I would like to know if maybe the lift was not done right or maybe the lack of a front sway bar is causing my problems. I'll post some pics in the hopes that that will help.


Thanks

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post #2 of 15 Old 10-23-2013, 04:33 PM
Mobile_Homie
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First off, remove the trac bar. The rig will ride and flex a whole bunch better. The angle on the drag link does not look bad, you may get some mild bumpsteer (when the springs compress the drag link going up causes the steering to dart to the right) Check out all the front end parts thoroughly, tie rod ends, ball joints and wheel bearings.

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post #3 of 15 Old 10-23-2013, 04:37 PM
celticrebel
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I would remove the traction bars. See if that helps.
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post #4 of 15 Old 10-23-2013, 05:32 PM
fratis
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Those longer shackle hangers might be contributing to a wandering feeling as well as what looks like a shim between the spring and perch.

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post #5 of 15 Old 10-23-2013, 05:57 PM
Mark05059
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Quote:
Originally Posted by celticrebel View Post
I would remove the traction bars. See if that helps.
that is not a traction bar. That is a trackbar... big difference...

to the OP... as stated before.. check for worn steering components... loose bushings etc... also check the u-bolts and center pins

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post #6 of 15 Old 10-23-2013, 06:15 PM
celticrebel
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Quote:
Originally Posted by Mark05059 View Post

that is not a traction bar. That is a trackbar... big difference...

to the OP... as stated before.. check for worn steering components... loose bushings etc... also check the u-bolts and center pins
My bad
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post #7 of 15 Old 10-23-2013, 06:27 PM Thread Starter
Black7
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it doesn't feel like it's wandering, problems only start when I go over a bump or dip in the road at 40+ mph. Is removing the trackbar safe? I've been browsing the net and it seams that 1/2 say go for it and 1/2 say don't. I've also seen pics of other yj front ends. They have sway bars and end links, do I need these? Did all YJ's come with them?

Thanks
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post #8 of 15 Old 10-23-2013, 07:26 PM
Sparrows
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Quote:
Originally Posted by Black7 View Post
it doesn't feel like it's wandering, problems only start when I go over a bump or dip in the road at 40+ mph. Is removing the trackbar safe? I've been browsing the net and it seams that 1/2 say go for it and 1/2 say don't. I've also seen pics of other yj front ends. They have sway bars and end links, do I need these? Did all YJ's come with them?

Thanks
You'll be just fine without the track bar. Better than fine in fact! On a YJ they fight the leaf springs and contribute so all sorts of uncomfortable nonsense.

As far as sway bars are concerned, yes it came with one. Do you need them? That is the 50/50 split right there. I didn't run sways on my last YJ and was absolutely fine. Others say they don't like the ride without them.

The sway bar (or lack there of) won't cause bumpsteer though. Just a more "boaty" feel, or body roll while turning or high speed, sharp maneuvers.

Check and make sure that your shackles are properly torqued and that the bushings are good. While you're at it, check all your ball joints and tie rod ends.

Cheers

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post #9 of 15 Old 10-23-2013, 07:37 PM Thread Starter
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can I remove the tracbar in my drive way? just unbolt it? rust willing that is.
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post #10 of 15 Old 10-23-2013, 07:48 PM
Tom95YJ
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Quote:
Originally Posted by Black7
can I remove the tracbar in my drive way? just unbolt it? rust willing that is.
My bolts were seized on my Yj. I just gave it some love from a sawzall.

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post #11 of 15 Old 10-24-2013, 05:54 AM
95YamJam
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Quote:
Originally Posted by Black7 View Post
can I remove the tracbar in my drive way? just unbolt it? rust willing that is.
In theory they unbolt. But like tom said. Sawzall is most likely.

My build: http://www.jeepforum.com/forum/f22/95-yam-project-1527472/?highlight=
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post #12 of 15 Old 10-24-2013, 09:39 AM
Mobile_Homie
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Quote:
Originally Posted by Black7 View Post
it doesn't feel like it's wandering, problems only start when I go over a bump or dip in the road at 40+ mph. Is removing the trackbar safe? I've been browsing the net and it seams that 1/2 say go for it and 1/2 say don't. I've also seen pics of other yj front ends. They have sway bars and end links, do I need these? Did all YJ's come with them?

Thanks
So what is it doing?

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post #13 of 15 Old 10-24-2013, 10:21 AM
superj
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wheel jerks and jeep darts to side, probably. mine does that and i have the same angle on the steering linkage. i know an alignment is part of my problem though and i have not recentered the steering arm on the gearbox from the lift so once i get my springs swapped around to be right, recenter the arm, and get an alignment, then i will look into other things if i still have bump steer.

I don't feel like working on anything, at this time.
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post #14 of 15 Old 10-24-2013, 05:23 PM
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The pitman arm is indexed on the sector shaft. What you describe is done my extending or reducing the length of the drag link.

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post #15 of 15 Old 12-17-2013, 08:55 PM Thread Starter
Black7
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update, new front shocks, new stabilizer shock, and sway bar put back on=problem gone.
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