Well here is the deal, about 4 to 6 months ago I put a budjet boost on my tj. I had no noticable vibes. Now I still have no noticable vibes but am getting a noise which sounds like bearings going out coming from directly under the shifter area. I have been under the jeep checking things out several times. U-joints feel solid, no leaks from seals or anything else. I always park in the garage and there are no spots or stains anywhere. I can only think that maybe I have vibes that are not noticable but are there and now they have worn out the t-case output shaft bearing. Could this happen with out ruining the seal or leaking? The noise only happens when in gear and letting off the gas. Step on the gas even just a little and the noise goes away completely. Please lend your insight. I don't want to tear open the t-case for nothing. Nate.
P.s. I changed tranny fluid, and checked t-case fluid about 10,000 miles ago. T-case was changed 10,000 before tranny.