Differential Noise 2002 Explorer Limited 4x4 V8

[sxlvr]

I read in this forum where the whining in the rear end is probably the R&P. Mine also sounds like it's grinding rocks on slow turns. What would be the cause of this wonderful noise.

I have recently had the number 7 plug to blow out and I fixed it with a kit from Time-Sert which worked great.
I replaced all four wheel bearings after being advised by several people that the noise I was hearing was the wheel bearings (not).

I'm wondering if it would just be cheaper to buy a remanufactured rear end instead of trying to rebuild it, if this is were the rock gringing noise is coming from.

Any suggestions would be greatly appreciated.

 

[srv270]

Its probably the diff bearings or the clutch packs going...I would take it to a local drivetrain repair facility and have them look at and give you a quote...in the meantime change the diff gear lube with full synthetic and add some friction modifier.