Hey guys I just had a pro comp BB installed onto my jk. 2 in rear 3 in front. Love the way it looks but now when
I go over a dip at a certain angle I get a weird clunking noise coming from the back right of the jeep. Almost like what it sounds like when you have something heavy in the rear and you hit a bump and you hear it fall against the floor. About the same timing and everything but there's nothing in the back to make that noise. (I've checked the stock jack etc) any ideas on what this could be or what may have come loose? Ive had a look around and nothing seems to be obviously out of place. Anything helps! Thanks in advance!

 

Have you checked that they properly torqued all the bolts in back? You may be hearing something moving from the install.

 

Did you put on new tires too? How about a spare?

 

mine did that and my sway bar was not tight.

 

Thanks guys. Definitely some good ideas I'm going to get under there tonight and give it a good inspection and try to tighten anything that appears to be loose. I'll let you know if I find anything.

 

How about track bar impacting the rear spring.

 

Spring not seated correctly??

 

Look to see if the bolt holding the rear spacers are contacting body. If so simply add washers to lower side of bolt or trim bolt.

 

I have this exact same problem with my pro comp 4" lift that the dealership installed before I got my jeep. I cannot figure out what it is either. No contact that I can see on the springs from the sway bar and I have checked multiple times to see if anything was loose but to my avail, nothing was loose and all the bolts were torqued correctly. If you happen to figure out what's causing it please let me know. I have been fighting this since I got the Jeep about 3 weeks ago.

Tyler

 

Check your lower shock bolt. I forgot to tighten mine and wondered for a few seconds before rechecking all the bolts.