I just had a 3" Teraflex lift installed on my jku automatic. The kit came with front lowers and rear uppers. I felt a noticable vibration on the way home from the 4 wheel drive center. It vibrates right around 15 mph and it's gone by 20 mph. Before 15 and after 20 it rides and handles perfectly.I had it up to 65 on the way home. The vibration seems to be worse when turning left? I have an allignment scheduled for next week. I will bring it back to be checked on Monday but welcome any input on what is causing the vibration. Thanks.

 

Alignment should change a lot. If MIT installed well, it could be an out of balance tire? What else was done besides the lift?

 

Too much adjustment on the LCA's can cause a vibration, but I'm not sure about that going away as you go faster. Usually vibrations that only occur at certain speeds are tire balance issues, but you didn't do anything with tires, right? I'd also check to make sure they torqued everything properly and the arms were tightened while on the ground. Something could be loose or bound up.

 

Correct nothing was done to tires. The vibration is very speed specific. It is vibrating strongly enough that I feel it in the steering wheel, gas pedal, and my seat. It will stay vibrating as long as I maintain 15 mph. Before and after smooth as can be. I'm sure confused with it.

 

Lift only.

 

LEt me know if you figure out what is going on with the vibration.... I have exactly the same thing happening to me after the Teraflex 3" install....

 

will do. still working on it. should know tomorrow.