I have a popping noice coming from the front end of my 93 bronco. It only seems to pop when i am at a dead stop and then take off quickly. Also while turning and accelerating. I had a friend drive it for me while i walked beside and looked underneath. I noticed that the radius arms where moving up and down a lot. I thought that would be the problem, so i replaced the radius arm bushings, and the axle pivot bushings while i was in there, but the popping is still there. The radius arms don't move up and down any more. I am wondering what the problem could be. Any help would be appreciated thanks

 

Try some WD-40 on the sway bar rubbers.

 

Look at the rivets and bolts that attach the radius rear bracket to frame- Had some TSBs on that issue- ALSO seen cracks in frame around steering box mount location.Seen bolt- stud retaining front springs on bottom fractured, as well as cracked springs. Just thoughts that come to mind-- Hope they might help!!!