Loud humming noise from right front.

[quote:7630d256ee="shghmh"]1994 Ranger 4wheel drive...while driving, a loud humming noise comes from the front right and when slowing down sounds like it's winding down. Could the 4 wheel drive be locked in? It's an automatic 4 wheel drive. We've tried turning the 4 wheel drive on and off, but no change.[/quote:7630d256ee]

Try grabbing your tire when on the ground at 3 0'clock and 9 0'clock and moving it back and forth. If there is any play there it might be your wheel bearings.