SoNic67-
With the truck in park and the parking brake applied what would you expect when you try to turn the front and rear drive shafts by hand?
I have an AWD Mountaineer and the rear drive shaft feels normal to me. It has very little rotational movement (lash) but the front shaft has 20 degrees or so of lash. Both drive shafts feel stable in the transfer case.
I am asking because I hear a metal on metal sound (not bad but audible) both under acceleration or deceleration. The only time you don't hear it is neutral throttle (no load either way) like going down a hill with just a touch of throttle.
What do you think?
Thanks,
Hank
P.S. Happy Easter!