Death Wobble can of worms

[SteveMongr]

A steering damper is not necessary on a properly functioning steering/suspension system. It will only mask any issues you are having.
The death wobble is coming from worn and/or loose parts.
First suspect is the track-bar. Check the end bushings for wear, check bolt torques including the bracket.
Also check all the control arm bushings and bolt torques as you stated.
Also important is every joint (tie-rods) on the steering.
Note; I still run a steering damper, just want to make the point that is not required for the steering to function well.

[jimmixj]

Hi Sean, you didn't mention if your xj is lifted or not. Also, is this a recent development, was there something else changed that started the problem or has it always been there? Worn parts are a likely culprit but it is possible to have DW occur because of too little positive caster. Ever get a shopping cart with a wobbly front wheel? That's a scaled-down version of your wobble. Just some food for thought...