I have a 2014 jk 2 door and i cant seem to track down the death wobble/wandering. Its got a 3.5" rough country lift(springs and shocks) synergy adjustable lower control arms and rock krawler adjustable upper control arms. Synergy adjustable tie rod and track bar. Rough country track bar relocation bracket and drop pitman arm. New ball joints were installed. Caster is at 4.5* toe is good. But i still get heavy wandering and death wobble

 

with vehicle off, if someone tries to turn the steering wheel while you focus on the frame side TB mount, do you see any play in that joint at all? Is that a newer model Synergy TB with their DDB bushings?

Even though you note new ball joints, you have tested them and they have no play right? It is not unheard of to have a brand new BJ that is not good. I've seen it myself.

 

its a fairly new track bar and yes its the DDB bushing. Ball joints are maybe a year or so old and were checked a few days ago(no play)

 

Death Wobbles is caused by something that's loose, worn or flexing and it could be more than one something.

Crawl under your Jeep with a good sized pry bar and use to see if you can find something that has play in it. Put some muscle into it. Whipping the steering back & forth is one way to find parts with play, but it can only do so much.

I've had Death Wobbles from bad ball joints, bent drag links & tie rods and a cracked frame where the steering box mounts.

 

I had a pull to the left and swapped the left and right front tires now it is gone. Try that first. Not sure about the DW. If you have other than factory backspacing and big tires then DW is always looming and is one of the reasons people go to D60/70 or 80's to get the wider stance and bigger tires without going to lower backspacing. But there are some good troubleshooting suggestions here. Might want to post some pictures of your setup here so that the members can see more.

 

If nothing else seems to work , you might try adding in 1.5 degrees of caster.... caster always helps.

 

+1. If that TB joint is good, double check torques on all steering and suspension components up front, then start probing like GP is saying. Typically it's TB or BJ related, and after that it's a real crapshoot of the actual steering box, TRE, DL, unit bearings.....and very, very occasionally a crapped out CA joint.

Can you produce this at will if you intentionally hit a pothole or bump? If so, you might see if the reaction is any different hitting a bump with passenger tire vs. the driver side tire.

 

if im going any where from 55-80kmh if i hit a pot hole or big enough bump it'll start to go in to death wobble. But as in driving done the road on uneven roads it gets really bad bump steer and likes to go where it wants

 

This might be a benefit:

 

As others said, check the torque on every bolt for the suspension. Bent drag link, tie rod, track bars, ball joints are some of the big ones. Check U joints, axle straightness.

If I missed it and you already did, have wheels rebalanced elsewhere. I’ve had some substantial vibrations at certain speeds form shops doing poor balance on large mud tires.

The problem is there are so many causes, and death wobble has become a fairly generic term for anything between minor road vibrations to true death wobble. None of it fun, and always needs to be addressed.

Check all suspension and driveline bolts as a start. Torque specs shouldn’t be hard to find.

Hope you get it addressed quickly OP, it is not fun.