NP231 whines like crazy!

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Jan 9, 2012 | 04:24 PM

BNJeepsta

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CF Veteran

Joined: Jul 2011

Posts: 2,164

Likes: 1

From: Warren, Pa

Year: 97

Model: Cherokee

Engine: 4.0L

NP231 whines like crazy!

Hey guys I've got a pretty loud whining coming from my t case when I'm in 4wd. High and Lo range both make the noise and the faster I go the louder it gets. Any ideas? I've got a 2" bb lift and 235/75r15 dunlops

Jan 9, 2012 | 04:29 PM

2trackin

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Joined: Sep 2011

Posts: 183

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From: Genesee County, MI

Year: 1999

Model: Cherokee

Engine: 4.0 Litre Chrysler MPI, "High Output"

Have you checked your fluids.?

Jan 9, 2012 | 04:34 PM

BNJeepsta

Thread Starter

CF Veteran

Joined: Jul 2011

Posts: 2,164

Likes: 1

From: Warren, Pa

Year: 97

Model: Cherokee

Engine: 4.0L

Yep got plenty of fluid

Jan 9, 2012 | 05:15 PM

n_a_i_w

Senior Member

Joined: Jun 2010

Posts: 695

Likes: 0

From: Arizona

Year: 2000

Model: Cherokee

Engine: 4.0

See if you can move the output shaft. Unhiik the drive line and try to move it. Might be the rear main bearing?

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