Recently got a 1999 Dodge Ram van 1500 with a 5.9 v8 and a no bus/stalling issue. Got a new pcm preprogrammed and the no bus is gone and i can communicate with the pcm now, However, the injectors won't fire. Crankshaft sensor has been replaced before along with the pcm around 30k miles ago after the crankshaft shorted the original pcm. After testing, 5v circuit and ground were good on map, tps, cms, and cks. Engine has spark and sparks during cranking but injectors won't fire. Fuel pressure is also within oem spec. Compression test on the engine was also very good. I can fire the injectors manually with my scan tool. Is this a camshaft/crankshaft issue? Ignition control module is reading rpm when cranking as well and no fuses blown. The upstream 02 sensor is reading too high of a voltage but when unplugged, the pigtial reads normally so i assume the 02 sensor is just bad but that shouldn't affect the injectors on cold start up? I also thought possibly the auto shutdown relay was bad but that would kill spark as well? pulling my hair out, any help would be greatly appreciated.
maybe the antitheft system is disabling EFI
Wanted to come back and say this post is SOLVED 🙂 Flagship sent me an ecm for a highline model which had anti theft. Recieved a new model today and with a new battery and fresh gas she started right now. Now to fix the minor issues but thank you for your input, it led me to the right direction after weeks of hard work.
glad it worked out. Thanks for reporting back.