grinding in 2WD notin 4WD
My truck has recently started grinding while in motion, but only in 2 wheel drive. Once I switch to 4 Wheel drive, the noise goes away. I check the transfer case fluid, and changed it, but I am still getting the noise. I talked to someone at the auto parts store and they thought I might have a chipped gear. I was also wondering if if it could be a busted hub. Anyone have any thought about what it could be?
I have a 1999 6 cylinder 4.0 4wd extended cab.
1999 ford ranger XLT V6 4.0L 4X4