if any one could help i would greatly appreciate it i have a 97 dakota with a 5.2 (318) when i drive it somewhere over 70mph or once at about 50 mph loaded fairly heavy the check engine light comes on when i took it to autozone the code came up cylinder 1 misfire i don't hear or feel a misfire at all i've heard a crankshaft position sensor might cause this but really can't afford to buy parts guessing the cause anyone have any ideas?