Transmission failure. The transmission skips gears when accelerating. Which is especially not good when you are trying to merge into traffic and the vehicle lurches you as it skips gears. Had it diagnosed at the Ford Dealership and they are saying the truck needs an entire new transmission. Skipping in 2nd-3rd gear and while driving in 10th gear it will drop. We purchased this vehicle used and it now has 103k miles on it. Because we are over a 100k Ford will not help us replace the transmission. I am not sure why there is no recall when this is a reported issue (that I wish I knew of before purchasing the truck).