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Unread 04-01-2014, 09:45 AM   #1
aagill225
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Transfer case issues

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?

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Unread 04-01-2014, 10:07 AM   #2
PolkaPower
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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.
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Unread 04-01-2014, 10:14 AM   #3
CatSplat
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Another possibility is that the transfer case's front output bearing is worn out and making the noise.
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Unread 04-01-2014, 10:38 AM   #4
PolkaPower
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Quote:
Originally Posted by CatSplat View Post
Another possibility is that the transfer case's front output bearing is worn out and making the noise.
I'm betting that it is if the VC was allowed to go bad for a while before the shaft was removed. Could be the reason the diff was messed up too.
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Unread 04-02-2014, 09:57 AM   #5
aagill225
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Quote:
Originally Posted by PolkaPower
I'm betting that it is if the VC was allowed to go bad for a while before the shaft was removed. Could be the reason the diff was messed up too.
Yeah I think it's the third time we've had the diff rebuilt. Is it easy to swap a 2wd t care?
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'76 Jeep Grand Waggy, 360cid Edle 660cfm/edle intake Quadratrac
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'89 YJ 2.5L, 5-spd, Borla header, dynomax super turbo muffler, Big-O XT 30x9.5r15
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Unread 04-02-2014, 10:00 AM   #6
PolkaPower
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Quote:
Originally Posted by aagill225 View Post
Yeah I think it's the third time we've had the diff rebuilt. Is it easy to swap a 2wd t care?
No, there is a very large thread at the top of the page about swaps. It's safe to remove the front drive shaft until you get it sorted out but go test to see if it's bad first to be sure.
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