Sorry for not using the search, my phone doesn't seem to want to make it work. Basically, when my drivers side tire hits a pothole, or when both tires go over a bump (anything from a frostheave to a speedbump) straight on, my steering wheel wobbles back and forth. It's not death wobble, but it certainly feels like if it kept shaking it would turn into it. I have 4" springs, teraflex adjustable track bars and lower control arms. I also have the woods steering stabilizer and relo bracket. Stock rubi wheels. Thoughts? I don't knoif I just need some steering geometry adjusted, or if something is wrong. Bolts are all torqued, and I did the control arm and track bar bolt replacement already

 

Sounds like bump steer to me, gotta dial everything in with that much lift. I get it as well over bumps


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I have the same 4" lift on my 08 unlimited, and I experience the same issues. I just had an allignment done, and that seemed to help. I need two new tires in the front, and maybe that will help as well! I'm not sure how to fix this problem, so I'm confused just like you:( Sorry I couldn't give you any advice on this!

 

Guessing your steering geometry is correct but hard to say for sure. Is your drag link and track bar at the same angle? If so, go get an alignment and see if that fixes the issue it could be that your toe is not set right. Possible that you also have a shock or even two going bad or even a tire that is causing it, have the shop check those for you if your not sure.
If your drag link and track bar are not at the same angle post pics so we can help point you in the right direction. We will need to see your drag link and track bar in the pics.
Edit:
Is it correct in assuming you installed 4" springs and did not replace your shocks? if that is the case very possible that is the problem.

 

Does your Jeep wander or is the steering very 'flighty'? What is your caster angle at? Mine did that till I had the caster angle dialed in. I have a 4.5" lift. If you just take it to an alignment shop and have them put in on a rack they will align it...to factory specs, which will NOT have you with enough positive caster for that height. Get your jeep realigned and get the caster in the 5 degree positive range if you haven't already.

 

It's not really flighty anymore. If I bring it to a shop, will the fact that I don't have upper control arms hurt me? I havnt ever had it aligned yet

 

So I don't know how that looks, but thats my front end

 

The fact that you don't have adjustable uppers shouldn't matter as long as your lowers are adjustable. The issue that I found is that the average shop has no idea that the caster should increase with the lift so they set it to the factory spec. Before I had mine set correctly I'd get a steering wheel wobble with front end impact on bumps, after I had it set, and the caster was the only part that had to be set besides centering the axle, it was perfect. Hit bumps all the time, and Northeast Pa roads are full of them, with no shake or shimmy.

 

so I should have them verify the factory toe in is correct, as well as the camber, but the caster on the front should be set to +5 degrees?

 

Setting the caster angle is a balancing act. You will find alot of different threads about it on the forum. Wayalife is a wealth of info on this as well. Everyone's final number will probaly be a little different but the general consensus is 5degrees positive or more for 4+" of lift. Some people are even at 6 degrees or so. Generally the higher the caster angle the more positive the steering feel, but as you increase your caster you will increase your pinion angle and eventually start to get a vibration. So caster is a balancing act, as much caster as possible to achieve the steering feel you want without getting any vibration. I believe I'm at about 5-5.25 degrees positive caster, that was plenty for me to get a postive steering feel with no vibration.