hi everyone. Thought i would run this past you. I have a 94 f150 4.9 auto. the problem is if drive for 20-25 mins. at 50mph. then you come to a stop. it acts like a truck with a Manuel trans in third gear at to low of speed. I have replaced map, idle air, ignition control, tps. with no luck. It has no codes. and runs fine. If you drive short distance it runs fine.I am stumped on this one. any help would be great thanks. chris. I f you let it sit for ten mins. after it does this it runs fine for about 10 mins. Its just when you try to come to a stop. thanks again.