hi to all. i own a 4runner 91 4x4 3l automatic and i'm having a problem with transmission. i was having fun in the snow and i got stuck:whoops:. i revved it a couple of times foward and reverse, and all of a sudden reverse started to slip. i got it out of there i tryed back the reverse and it seemed to reverse fine, but 10 minutes after i have to rev it for it to reverse, but it still goes a1 foward. is my transmission dying?? thank you for your time.