4.0cherokee

Hello,
I replaced the motor mounts that were destroyed. I replaced them with the Brown Dog Motor Mounts. It took me a few hours because i lifted the motor to high and the trany mount bolts slid out of the crossmember and I ended up having to take the crossmember off to get them back in. Any way so I was excited that the jeep felt great. THen i was going down the road and it felt a little ruffer than normal, but i figured that was normal since i now something in betwen the motor and the frame. THen i hit a bump in the road and WHAAAm the jeep starts jumping all over and so i throw it in the ditch to avoid oncoming traffic. I drive down the road a little more and baam it did it again. It only happens when i hit a bump that makes the suspension enough to set it off. I have replaced all the ti rods with Moog racing stuff just recently so it itsnt any ti rods. I can feel a little clunk under my feet. So i took my skyjacker LCA off and the bushing has a little play. Is this the problem? I dont know what else it can be. Can you guys chime in?

ceejay612

have you changed your pitman arm? main cause of bumpsteer
are your LCA's long enough? an indication is the thrust angle being off on an alignment. google the length chart if not

Nor-CalJeeper

The clunk underneath your feet is more then likely going to be your track bar mount is loose. Double check all the bolts on the trackbar to unibody mounts.

If possible have someone try to "steer" the jeep with the engine off and while you are looking through the wheel well at the mount to see if it moves at all.

If it does thats an issue. Even after all of my bolts were 100% tight my mount still moved a light bit so i had to tack a small weld above it

Nor-CalJeeper

the nuts are also right near the drivers side motor mount under the airbox, Did you accidently loosen one when switching mounts?

4.0cherokee

no the arms arnt long enough, but why in the world would i never get it until i changed the motor mounts?

4.0cherokee

No i didnt losen any of them. If i just go ahead and order long arms and an ajustable track bar it might fix my problem? I am at 5 inches right now with short arms and non adj trackbar.
I also need an sye, but that is beside the point.

spittinimage

track bar used to cause it on all the old ford farm trucks i used to work on.

4.0cherokee

ok i will just get a jks adj trackbar and go from there

saleen9973

I have the same problem. Just put in brownn dog mm and bam death wobble! I have a RC 4.5" lift and stock track bar. Everything is tight underneath but the axle is over to the driver side about 3 inches. I hope a adjustable TB will help me.

X-J

Front end alignment cured the death wobble I had,
(camber shimmy)
After I replaced the whole front end

claygrassmann

with that much lift and if you have the money then i would suggest the track bar and at a minimum UCA's to match your LCA's or like you said long arms

lliamsdad

x2 ^^^^ thats pretty high with stock uca's.

X-J

X3