How much gas do you have when it does it. Reason I asked is cause when my did that about two/three wks ago Ford ended up replacing my fuel pump after two visits w/in the week. Sounds similar but could be mistaken. It wouldn't do it till about a little under a half tank, and then it was nasty. First gear it would start at about 4k and just shake kind of violent just like fuel cut. second was later, around 5k but you could feel the pull up to that point wasn't very powerful. Don't know if the same just puting in my 2 cents for what its worth.
