Have an 06 F250. It has 151k miles just had trans fluid changed. It seems that when im on throttle and try to accelerate, nothing. Its stuck at the rpms I was cruising at. I get off throttle and then back on it comes back. I was having an issue with the trans kinda slipping and not really wanting to downshift to accelerate, but its just feels like its stuck. I dont know if its the trans needing to be rebuilt or the engine being weird.