So i had no fire on cylinders 2 & 3 so after doing all the checks..wires..plugs..etc everyone i talked to was telling me ICM. so i went and bought one and replaced it which was pretty much $150 guess. Well the guess failed as the truck will not fire at all now. it was atleast running but on 2 cylinders. now i have no fire!!!! please help. I cant keep dumping money in this thing i just put new radiator,hoses, plugs and wires in this thing in less then 3 weeks now this. a 94 with 171k on it.