Have a 99 WJ 4.0, was lifted when I got it with skyjacker shocks, springs, and front lower control arms. Has JKS adjustable track bar, drop pitman arm and heavy duty rear sway bar. My problem is the front end is making a popping noise when I drive it. Local shop says ball joints are good and everything looks good. Anyone have any issues like this?

 

start checking bushings. there are quite a few on the front end. control arms/track bar/sway bar end links/shocks...

 

I would crawl under it and lube everything with a grease fitting and drive it a few days see if that fixes it.If it don't then you have other problems.

 

Check the track bar bolts for tightness.