Rear Differential on 2001 Ford Expedition

There is a whining noise coming from the back side of my 2001 Ford Expedition. It's more apparent when I accelerate the vehicle down the interstate. However, when I release the accelerator the noise lessens. I was told this could be the rear differential. Is this true and how much would something like this cost??

by in Mechanicsville, VA on August 05, 2010
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , August 05, 2010
bearings bad in rear. about an 800-1000 repair. Roy