so i think ill just list the problems that have randomly started coming up with my xj and just tell me what you think or what you can suggest. any help or advice will be greatly appreciated
here they are

1: I'm getting strong vibrations when accelerating especially between 30-40mph BUT! only when accelerating, if i take my foot off the gas she rides like shes brand new.

2: at 50+mph when accelerating she seems to make some sort of rumbling noise thats really really loud.

3: also at 50+mph there seems to be some sort of rubbing noise.

all 3 of these are all occurring simultaneously once i reach the designated speed so i don't know if fixing one thing will cure all of them but if you have any ideas please please please let me know. Thanks

 

U joint is my first thought.

Is this rig stock?

 

oh yeah that info might help haha

its a 2001 cherokee sport 4 door it currently has a 3" rough country lift kit with the nitro shocks

and do you mean the u-joint could be bad?

 

Moved to Advanced Tech.

Does it have original U joints?

Does it have a tcase drop?

 

no t-case drop and yes original u-joints, the thing is that the lifts been on for a month or two now and the problems are just showing up

 

without a drop or SYE, a lift puts more stress on the ujoints making them go bad faster

 

Try a t-case drop first. U-joints will need replaced since they are wore now.

 

I have the same lift plus 2inch spacers had the same problems after the 1st month or 2 if u get a sye and t case drop problems will go away .

 

At 3"of lift most of the time a drop isnt needed.

Also, drops out more stress on the motor mounts, wearing those faster. I would rather change a u joint than a motor mount.

Check u joints, go from there.

 

I know after I got done with just the 3in lift my rear driveshaft angle was out a lot but that's new leafs in the rear now with stock broken in springs with a block or aal id say it wouldn't be needed.

 

So this may be a stupid question but I haven't gotten to know this area of the jeep yet haha so how do I go about checking them

 

Bump

 

Bumping is against forum rules.

Please do not bump in any way.

 

Sorry man my bad

 

Trust me, being patient sucks sometimes. I know first hand.