Alright, I just replaced my AAL's with new RC 4.5" full leaf packs about two weeks ago but just recently everytime I hit I good size bump or hole it makes a loud poping noise from the back. It's just one solid POP. Any clue what the heck is going on? I already recheck all bolts and everything is to specs.... This never happened with the AAL kit and before you ask no I dont have an SYE kit installed.

 

check the back of the shakel pocket i hade the same problem with the teraflex shackles they where hitting the back of the pocket every time i hit a bump

 

what did you do to fix the problem then?

 

any other possibilities guys? This noise is really making me PO...

 

ive just replaced mine from worn stock to stock and had to move the exhaust - theres not much room between the tank and leafs...... could be movin around, and knocking?

 

upper shock bolt loose?

when I changed mine recently, I snapped a bolt off (actually three total. gotta love that mount design and salt!) and had to drive to store to get a new bolt and the right size tap. it made a noise like that. sounded like someone hitting the floor with a hammer. only had one bolt holding it in and half the old one.

 

Worn shock bushings? Worn sway bar bushings. Loose sway bar. I had a XJ years ago with the spring hitting the spring pocket and I redesigned the spring pocket and welded in a new deeper box. That was a lot of work but it solved the problem and it was much stronger.

 

I think it could be upper shock mount noise too. I had the same problem when I lifted my XJ and wheeled it a couple times. I used the rear sway bar mounts to make my own rear bar pin eliminators. Solved the problem completely. Here;s an article on how to do your own rear upper BPEs...

http://www.lunghd.com/Tech_Articles/.../Rear_BPEs.htm

 

the same sound came from my new shackles hitting the 2 bottom bumper bolts when the shackle moved back, i just removed the 2 bolts, ground down the extra threads that were sticking past- problem solved, no more bump sound