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#4: 12-04-2012, 06:57 PM
 
 compsurge
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Title: Burning Monkey
Location: Delaware
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What are symptoms of the whine? On-throttle only whine that goes away when you lift off the accelerator? A whine in any gear at 35+ mph? I had a whirring noise when in neutral and coasting at low speed (inaudible at speed). Eventually the whine turned into a marble-in-can sound.

Do a fluid change first (see what comes out).

Does it sound like this (start around 14 seconds)?

If so, it's most likely the center differential transfer driven gear bearings. $133 or so in parts cost to replace the 4 in the center differential case extension. The good news is (if you've got time and tools) that you can DIY this job in a weekend. You will need a shop press and a set of punches for roll pin removal (I used a set from Lowe's).

Here's the NASIOC thread on the issue.

Last edited by compsurge; 12-04-2012 at 07:02 PM..