So, I just finished installing a Serious Offroad long arm kit, a HD Offroad low profile shackle relocstion bracket, and some JKS discos. I hopped in to go for a test drive and I'm getting bad growling and a vibration coming from the driveline. My first thought was that I needed a SYE (had the T case dropped before) or, the caster angle was off.

I started on the road to diagnosing it. I checked the caster angle and that comes back at 5*. I then put it up on jack stands and got up to speed. Dang thing sounds like its going to fall apart! I pulled the front and rear driveshafts seperately one at a time. It still continues to growl and vibrate. So that kinda rules out the lack of a SYE and caster angle.

Not much else left that they shafts have in common except the t-case. Could the chain have slop? Not sure what else to check.

98 XJ
5" lift
Serious long arms
Rear Spartan locker
33" Duratracs

 

What kind of shape your motor and tranny mounts in?

 

That's a good question. You know I've never looked. The Jeeps at my brothers across town. I won't be able to check them till Monday. I wouldnt have thought to check those. I never had a problem before. I'd love to not have to a rebuild on the transfer case right now if I donn't have to.