pile of codes and a no bus and a confused owner

[jef]

the pressure to the pump was good but i had no pressure at the head fuel just dribbled out and very hard starting i believe this was due to letting the last lift pump go to long and not having a guage at that time so i pulled and replaced the vp and put a new air dog system on. the truck ran great in the garage with throttle response as soon as i got out of the garage dead pedal. threw 0215 0122 1475 and 0236. so i started at the map sensor 4.87v then on to the pcm got nothin then on to the pdc more than100 ohms so im kinda thinkin ecm.

[Mopar1973Man]

the pressure to the pump was good but i had no pressure at the head fuel just dribbled out and very hard starting i believe this was due to letting the last lift pump go to long and not having a guage at that time so i pulled and replaced the vp and put a new air dog system on. the truck ran great in the garage with throttle response as soon as i got out of the garage dead pedal. threw 0215 0122 1475 and 0236. so i started at the map sensor 4.87v then on to the pcm got nothin then on to the pdc more than100 ohms so im kinda thinkin ecm.

P0215 - VP44 failure - http://forum.mopar1973man.com/threads/2561-P0215-Fuel-Injection-Pump-Control-Circuit P0122 - APPS Sensor - http://forum.mopar1973man.com/threads/2556-P0122-Accelerator-Position-Sensor-(APPS)-Signal-Voltage-Too-Low P1475 - +5 Volts too high - http://forum.mopar1973man.com/threads/2623-P1475-Aux-5-Volt-Supply-Voltage-High P0236 - Map sensors too high too long - http://forum.mopar1973man.com/threads/2570-P0236-Map-Sensor-Too-High-Too-Long Well just looking at the codes P0215 requires a new injection pump. I'm going to assume the P0236 code is caused from the P1475 code that might just be a ECM problem. P0122 might be just a wore out APPS sensor but I would deal with the P1475 first.