95 pathfinder trany problems

[larryme]

my 95 pathy 's power switch light blinks 16 times after i turn thje key on. i know there is a problem with the transmission, but i was hoping to see if any one knows what it may be before i get ito the dealer for repair. it periodically clunks down into gear as it is down shifting . ususally between 40 and 25 mph. now it has developed a small shifting lunge when going down the hwy but it's only slight. this only happens after it has shifted into the last gear.

PLEASE HELP!!!