Hi there -
For the last year, I have an increasing problem with a whine from the rear of my explorer. It sounds like it is coming from the rear axle. When you accelerate at any speed the whine gets really loud, each month is louder. I have had the fluid changed in the axle. It is an open differential, 3.08 (i think). Lately, when you coast, it now has a "gear sound" - real low pitched noise.
Is it time to have the differential reworked? I have replaced the old Michelin ties with new ones as they wore out and have had no difference.
Any ideas?
Randy