I notice that after backing from "park" and make a a left turn of more than 90 degrees it feels like I run over a small stone or hard object that cause s the jeep to jerk a little bit. I jacked the wheels & wiggled it horizontally & vertically but wheels are stable so I am ruling out bearing. is it ball joint or links?
Thank you for your input Bros!

 

Are you in 4 wheel drive?

 

auto hubs? if so its because your fornt end is engaged so it will jerk like that all the time my jeep does it too, im goin to install manual warn hubs and it will fully dis engage your front end and no more jerking and better mpg

 

Its not on 4 wheel drive, its a 2000 cherokee sport 4.0L,2WD

 

your talking about control arms? when you say links? could be some slop in the bushings if they're OEM.... or could be axle shaft u-joints, they pop when you turn the wheel...

ball joint test, jack up a front wheel and push up on the tire if you have up and down slop then thats your ball joints.... then face the tire and push on the tire at like 8 and 2 ... if it wiggles then its wheel bearing/hub assembly

or you could be running over a squirrel that you can't see

 

Is your rig lifted? Bigger tires? Could it be your tire rubbing on your control arm? Mine do, and it feels similar to this.

 

Ok Bro,got an oversize tires,235/75R/15. I have to check the joints too. By the way Bros, when you say control arm, did you mean the Pitman arm?
Thank you guys. I will give you a feed back.