im new to this forum and i have a 92 xj and the only thing that i have done to it is put a 4" rough country lift with 32" goodyear wranglers. the jeep wheeled awesome until the end of my day on my last climb this terrible knocking sound came about and i cant tell where it is coming from it will only do it in first gear and sometimes second so im not sure if its the transfer case and it feels like its coming fron the front driver side wheel so im not sure if its a hub issue??? ANY ADVICE????

 

This is one of those things where you'll have to get under the Jeep and start looking and shaking. Does it still happen in 2WD?

 

yeah i happens mostly on inclines while taking off in first.. im not sure but im somewhat leaning towards the u joints? but im not quite sure

 

Motor mounts good? If there junk your engine can be twisting causing your fan to hit the shroud.