Recently purchased a 01 ram 1500 4x4 5 speed from a buddy in a bind, it runs good but when it's in gear and you let off the gas it rattles, clanks, and bounces? No problem at all as you go through the gears driving, only when it's in gear and you let off the gas. It doesn't do it in neutral slowing down. Any ideas??

 

Check u-joints, and wheel bearings, both differentials please.

 

yeah that ^^

 

Does the rattle kind of sound like marbles in a can?