DEATH WOBBLE! i got a lift in my jeep, put in a adjustable trac-bar, dropped pitman arm, heavy duty steering stabilizer... still shimmys over bumps?? any thoughts

 

How much lift

 

Get an alignment, your caster is prolly off

 

Mine is doing the same thing and my caster is way off so am gonna get adjustable lower control arms.

 

4.5" rough country lift. and i just had an alignment done to it, could it be i need adjustable lower control arms?

 

A dropped pitman arm changes your track bar/drag link geometry. So when yo hit a bump, your steering changes a small amount and then bounces back. This can set up an oscillation and death wobble. You might try putting your old pitman arm back on. That costs you nothing.

 

Moved to Advanced Tech.

 

shim your lower control arm as fr out as they will go... (I assume you have STOCK LCAs?) should take a 1/3" spacer

you also need to keep your track bar and steering draglink at EQUAL angles

 

...mine does this.


...And its stock. Like BADLY, does that.

 

You should have at least fixed control arms with the RC 4.5" kit.

X2 on the track bar / drag link angles

 

I am assuming you got the whole kit? Long arms or short? I would start measuring and contact them to make sure you got the right parts for your links. They ship a lot of stuff and mix ups can happen. That also costs you nothing.

 

Did it do this before the lift?

 

i got the entire rough country 4.5" short arm kit. and it didnt do this before the lift.

 

They sell 2 different 4.5" kit. One with adjustable upper and lower arms, and one with fixed lower arms that uses your stock upper arms. Which one do you have? It could be your caster. Look at the the way your springs sit. Are they straight or bowed? Do they appear to be centered? If you have adjustable upper and lower arms you should adjust them to make your springs straight up and down and centered within the upper bump. If you have the fixed arm kit you will need to add shims to the lower control arm brackets on the frame to do this. You will also want to check your toe. In my experience caster and toe are the biggest causes of death wobble. Even after everything is set perfect you will still likely have some bump steer. The only way to eliminate bump steer is to get your drag link parallel to the ground and that requires an otk steering setup or a new steering knuckle. I have a 6.5" lift with the currie steering setup. Once I got my castor and toe set right it got rid of any death wobble, but I still have a bit of bump steer.

 

^ I would agree. either somthing is loose and the geometry change is making it show its self, or its the new geometry its self...