What causes this to happen when reaching 60 miles per hour or above and hitting a large pothole or bump. Everything underneath has been replaced within the last 6 to 9 months. Just got all new tires today mounted and balanced and a full alignment. All the shocks track bar steering damper upper and lower control arms ball joints and bushings have all been replaced and yet this still happens

 

yep

 

Do you have a lift ?Has the jeep had a alignment since you replaced the trackbar ?

 

I replaced the track bar Nd all the other stuff and it stopped. Then it just came back. I just got new tires and an alignment and it still isn't going away. . I was gonna try and dual steering damper kit but without at least a 2" lift I don't think it will clear the oil pan. . ugh. . .so disheartening. First jeep I ever owned that had this problem. I'm sinking money in it.

 

Including the steering gear?
(people often leave it out of the discussion for some reason).

It has an important role to play in damping sudden shocks to the steering system.