I am having a humming sound that I think might be the t case. My 98 5.2l has 214k miles and I've never had and issues. We replaces the from ring/pinion because that corrected the problem in the past. This time no go. The sound only occurs when the front drive shaft is installed and goes away when it's removed. Does the VC in the t case make a humming/whirling sound when it's bad?
'99 WJ, 4.7L, completely bone stock, except for 245/65/16 tires
'76 Jeep Grand Waggy, 360cid Edle 660cfm/edle intake Quadratrac
'02 Exterra 3.3L, 5-spd, traded YJ for it :(
'89 YJ 2.5L, 5-spd, Borla header, dynomax super turbo muffler, Big-O XT 30x9.5r15
2004 Jeep Liberty Renagade 3.8L 2wd
'86 XJ 2.8L V6, 5-spd manual tranny (My 1st)
To test if the VC is bad put the front shaft back in and drive it in tight figure 8's with the steering wheel turned all the way. If it feels like it's binding and hopping and you need to give it some gas to get it moving then the VC is bad. It will also leave tire marks on the pavement because the front tires are being dragged.
A bad VC can lead to a bunch of other front steering problems, tire wear, diff issues, ect.