ok if any one has any ideas i would really appriciate them. i have a 1994 ford explorer 4x4 with auto trans. i left work one day and upon entering the highway i gave it some gas and as it shifted from second to third there was a loud pop and then it lost all power to the wheels. engine still runs fine and never cut out. there are no strange sounds when shifiting the gears and it will not move if engaged in 4 wheel either. there is no leaking of fluid i am starting to suspect that it is not the tranny at all but rather the transfer case. any ideas would be awsome thank.