need some help with some wobbles...

alright, i've had the jeep on the road for a good three years and haven't had any problems until the other week when it started wobbling while braking. it did the same thing when it was lifted, but that was taken care of by flipping the tie rod ends. the only thing i've added recently was an hei... and if someone can link that to the suspension acting up i'd have to throw the towel in on everything i know...

here's what i've gone through so far:
(1) spindle nuts. they were loose due to me using the screwdriver/hammer method way back when. currently set the inner nut to where the wheel starts to drag and the outer to as much as humanly possible.
(2) tie rod ends. found one loose (really loose) and tightened it back down as much as humanly possible. the rod ends are flipped so i lost the cotter pin hole on the ends, but it is a lock washer that came with the kit.
(3) u-bolts. found two of the ubolts somewhat loose and tighetened them down as tight as i could.

that's what i've gone through today trying to fix it. i've got a couple more issues that need attention like a crack in the frame rail above the front spring hangers due to some c-channel being welded inas a bumper. the camber looks pretty nasty and opposite what you would think it sould be (top goes out-- rules out the spindles right??). the alignment hasn't been looked at just yet... but it just started the other day (no warning of oncoming events) and only during braking?

anyone know something that could possibly be causing it that i haven't thought of?? i've done this disk conversion so could the rotors be warped?? any thoughts??

 

Lugnuts on tight?
Maybe your braking is so good that the upper threads stripped out or were loose upon braking? :? Might be worth a look. Maybe jack up one wheel, spin the tire, and have an assistant jam on the brakes & see what you can see. Good luck!

 

Mine did the same thing the other day. Scrared me. I was told the toe adjustment needed to be check and check for a sticking brake. My left front was the one that jumped under heavy braking.

I am doing a brake job (it pulls to the left and has a rear leaking cylinder) and getting it professionally aligned.

 

please post updates when you pinpoint the problem.

 

welp, camber was discussed in a thread just the other day, so the tires are supposed to point out a little bit at the top so that rules out the camber. the frame crack has been fixed and it reduced the violence of the death wobble; so it was part of the poblem but not the only one. the bearing cups have been tighetned and that did away with the obbles for a little while, but they came back just the other day. which means i'm down to kinpin bearings and everything that goes along with them and an alignment. but i was driving it around for a year-year and a half without a hint of shudders before the death wobble so i'm planning out the kingpin bearings now...

that's where it stands, still not under control, but the new parts are narrowing things down

 

If you haven't replaced the kingpin bearings and cups yet, that's prolly the culprit.

 

Mine never did this until I installed a 2.5" lift. THe alignment and brakes are starters and I will check the bearing cups (Bearing cups are just bearing races right? Do you have to remove the axel to get them out?

 

Yes, you do. But it is an easy project. The most time consuming part was cleaning up the knuckle (and waiting for the ups truck to arrive )

 

Front end alignment (toe correction) helped my problem

 

A wobble in the front end started by braking is usually caused by the caster angles changing. This is usually related to the Kingpin bearing/ Ball jts worn out. Also check ALL other ft. end parts for wear.