I have an 08 JKU, 6spd. manual. It has about 52k on it. I have a vibration that is related to engine RPM. At 2000 to 2200 rpm I get a vibration, it does it in 4th gear or 5th gear...same engine speed. The wierd part of it is that it don't always do it..but, when it does if I push in the clutch it stops, I'm thinking clutch but there is no noise. This Jeep is completely stock. I have heard of other people having problems with vibrations. I dont want to go through putting in a new clutch for nothing. Anyone have any input on this?

Tom

 

I'd be interested to hear from others about this, too. I have the same issue that you described exactly, but my Jeep is an auto (08 Unlimited). Funny that it only happens around 2,200 RPM.

 

I'm having same problems, i read somewhere it could be a tranny mount broken?
anyone?