351CJ

"4.0L" <dstaffor@calpoly.edu> wrote in message
news:1139250816.011024.9920@z14g2000cwz.googlegroups.com...
> The 3.73LS differential in my 2-wheel drive Explorer started whining at
> about 60 MPH before the original warranty expired, so I took it in for
> repair. The differential was rebuilt (ring and pinion, etc.) and the
> noise was gone. Unfortunately, the whine noise returned within 1000
> miles. I got busy with other things and neglected to return the
> vehicle until 14 months passed. The 12/12 repair warranty had lapsed,
> so now I'm stuck with an $850.00 cost (25% discount for repeat
> failure). My question is, do any of you who might've experienced this
> problem know if the replacement parts are any better than the
> originals? In otherwords, is this problem likely to return again soon?
> And, if it does, am I out of luck after the 12/12 warranty lapses?
>
> 4.0L
>

Sounds like the repair may not have been done correctly. If the gears are
not set up properly they begin to chew themselves up right away.

If you are going to have the work done again, MAKE DAMN sure that the person
doing the work is very experienced and good at setting up rear-end gears.