everything was fine the night before never had a hiccup at all i turned the key to the start position and only herd a relay click so i assumed dead battery so i put a jump to it and nothing so i jumped the solenoid and it would crank but no start so getting back in the van i realize i cant hear the fuel pump kick on so after two days of trying to start it checking fuses and relays and not finding anything it just starts and ran like crap for a min and shut it off it fired 3 more times so i changed the ignition switch and made sure all was intact it fired right after putting in the new switch but still ran like crap and died after about 45 seconds now its back to a no crank situation and all instrument panel lights stay on and now all the gauges go all the way up and back down and i also noticed when it does start i see the square around the p in the gear selector and its not visible when it don't start any ideas?? i'm thinking PCM but not trying to spend that kind of money if its something i could be over looking thanks for the help

 

Im having the same issue with my ram. Cant figure it out. Thinking nuetral position switch but that is a $400 part (its part of the valve body inside tranny in my case) and want to rule out everything else before i spend that kind of money.