Baby D

Alright make this short put a 3.5 inch lift in my xj started getting vibrations in the steering wheel very bad at 50 or so also the steering wheel has quite a bit of play brought it to my old work and got an alignment it still vibrates in the wheel when u have the wheel turned a little bit to the right Ike going around a slight corner it almost kicks back at you any ideas??? Also I need to add before I put in my new lift I had my old lift with a broken coil spring n whenever I go over a bump its like I smash into something n there's like a bang or boom sound any ideas would be nice.... thanks in advance.

freegdr

did you relocate trac bar so front axle is centered

Baby D

No would that really cause that??

ohio95xj

Yes, the track bar relocation, as minor as it may seem, is incredibly important, without it, your axle will be off center, causing your steering and suspension to be tweaked, and also did you have your front wheels re alligned, that is also important

BotakBeng

X2
Here is a good write-up.
...or you can go with an adjustable trackbar.

Another possibility is a bad front pinion angle.
Remove the front DS to see if it goes away.