alright guys i just bought my first newer style ford for 1700 bucks it has 235000 km on it dont know how many miles that is lol. had a miss changed plugs and wires was good for a while started to develope a miss when you hit a hill doing 60km or so and you try to lug it along in 4th g ear. had a tranny guy check it over he doesnt believe it to be trans he thinks engine. changed coil packs it went away for about 2 weeks then its back again only when you hit a hill. i am outta ideas i did do a injector service to it. tranny service i am out of ideas. o2 censor? cam sensor? crank sensor? it never does it long enough to give off a code so i dunno lol it doesnt do it while i am towing either. and i put what i believe to be a heavy load on such a small engine. 3 snowmobiles 500 lbs each atleast. so i am really looking for help because mechanics around here dont like us do it yourselfers any advice would be appreciated. and from what i know it cant be that many options left except for a standard trans computer in an auto trans truck. thanks again