The truck has not ever done this before today but i was leaving for school and the truck was in first gear and started to slip out the back in to gear constantly for about five or 6 times. The would act like the alternator was out. I love the truck and am a ford man but it is starting to be a pain in my ass. I have a k&n air intake and a custom 5 inch exhaust by MBRP and a 7 and a half inch muffler with/o thee catalytic converter.

I just bought this truck from a friend he just had about 2,000 worth of work done to it about a piece of metal in the plugs or something, anyways so here i am going up the road and the damn thing wont go no faster, going 40 mph up a hill and the tranny slips. it keeps doing this till i put the truck in neutral and turn truck off then back on........ ahhhhhhh