This is what I know so far, when backing up on pavement lets say in a parking lot for example. After backing up with a sharp turn for lets say 10 feet I hear a pop. It seems to come from a different spot each time front/middle/rear. I don't think its the diffs making the sound. The sound isn't as loud as a diff popping. Any ideas?

 

Could be a lot of things. First ill ask, you're not doing this in 4wd using the 231 right?
Second. Start poking your head around. Check the axle u joints. Could also just be your brakes sticking from being parked. Or front leaf spring bushings are worn and have slight movement. Damn jeeps do nothing creek, crack, knock, screech and chatter

 

no of coarse not. Ok I will look around and see what I can find. I'm new to this whole jeep thing and it makes more sounds than an old man

 

Knobbly deep treaded tyres make popping noises on tarmac when you turn sharply.

 

My knock clunk wiggle squeak front end , when turning or backing was a missing steering stabilizer castle nut. Could be a couple things. Have someone turn the steering wheel while you peak and prod underneath