The oscillation you describe is death wobble. Common points of failure are the trackbar bracket holes wallowing out and control arm bushings. Balljoints, tie rod ends, and unbalanced wheels/tires can also be a problem. Anybody tells you a steering stabilizer will fix it they're wrong.
Check the track-bar first, loose bolt there is the easiest to fix.
Since you have the 4.0 it's a good idea to upgrade to the V8 steering linkage: http://www.amazon.com/Crown-Automoti.../dp/B008VPUOSO
If your CA bushings are worn (they are) I suggest getting whole new arms as beating the bushings out isn't worth the pain for the cost difference. Get moog, some of the off brands sell you the wrong parts.
1996 ZJ Green Laredo V8, 2.5" OME and Bilsteins, 31's, Holes drilled in the roof.
1998 ZJ Platinum Limited 5.9, New engine and trans, no front driveshaft, but it's pretty
"Whats wrong with a PT Cruiser?"
"Coulda had a V8!"
96 build thread
Niner build thread
Originally Posted by Texas ZJ1
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.