i got this truck running after it sat for over 7 years. 87 tbi 350 . it has a new motor to it with all electronics from the 88 350 it sat for 2 years. all fired up and run good for few days. then it starts to throw code 42. i check it and then check timing. its at zero with wire pulled . i have a new module in dist as it was orignal and yucky looking. so when motor was swaped and tuned up on install i swaped in new mod. it ran perfect for few days. then started this crap. now i swaped in newer good computer with 350 chip in it. both same service #s on them. it still does the same thing. and some times it takes 10 min to pop light on and set code. others its 1min or less from start up. this is all cold or hot motor. other day was plowing and it would act like it lost fuel and die. to start it i had to floor it and clean it out. and the more i drive it now the more i dont trust it. it starts to buck and die when driving it. just looking for a good idea as i am ready to start figuring this out.