T-Case whine?

[CStamm]

OK, sorry to bring this up again, but it's driving me crazy. My first post is here....
http://www.naxja.org/forum/showthread.php?s=&threadid=12721

So I pulled the front DS, and the whine was all gone. I had a feeling the whine was coming from the center pin in the cardan joint. So, I "borrowed" a DS out of another XJ, and the good ole whine is back.
What is left, it has to be the front T-Case output right? That is the only thing not spinning with the front DS out correct?
As always, everyone's help is greatly appreciated.

[RookieJeeper]

what about the front axle output?

[CStamm]

the front axle output would spin with the diff., regardless of if the DS is in or not, as far as i know. This is because it's a non-disco axle.

[cherokeekid95]

its amazing how sounds seem to be coming from one thing but they really are somewhere else when you have lots of metal around. just keep that in mind;)

[Mark WNC]

Take the driveshaft out again and shift into high four wheel drive and see if the whine comes back. If it does its prolly the front out put on the t-case, if not its prolly the front Diff.
Just my $.02.

[CStamm]

good idea MARK, the only thing is, is that it only whines after it gets warm. I guess I'll have to warm it up with the DS in, then yank it, then try the 4 hi thing. Good idea thanks!
Still open to other opinions if anyone has run into this.