skilletky
i love lamp
ive got a 3.9L common rail ISB that is giving me some trouble. truck would not start. truck sat for 2 days before i could look at it.
with the key on engine off, i was getting code 2215. has fresh fuel filters, CP3 is less than a year old, injectors are not leaking, and all fuel lines/fittings are good.
i could crank the engine, and get 0psi rail pressue, then after about 8 seconds of cranking, would build enough rail pressure to pop the rail pressure relief valve, then go back to 0psi. FCA duty cycle was reading 1586%.i checked the FCA plug and i was getting battery voltage at the FCA. im guessing since the FCA had battery voltage to it, the pump was just building pressure behind it, and once it got enough pressure to overcome the FCA, it released it all at once to the fuel rail. i left the FCA unplugged so i could start the truck and move it into my shop. once i got it into the shop, everything was, and still is, working fine. i pulled the engine wire harness out and went through it and everything was fine. could the FCA driver in the ECM be bad and randomly sending battery voltage to the FCA? or i am overlooking something else that could cause this?
with the key on engine off, i was getting code 2215. has fresh fuel filters, CP3 is less than a year old, injectors are not leaking, and all fuel lines/fittings are good.
i could crank the engine, and get 0psi rail pressue, then after about 8 seconds of cranking, would build enough rail pressure to pop the rail pressure relief valve, then go back to 0psi. FCA duty cycle was reading 1586%.i checked the FCA plug and i was getting battery voltage at the FCA. im guessing since the FCA had battery voltage to it, the pump was just building pressure behind it, and once it got enough pressure to overcome the FCA, it released it all at once to the fuel rail. i left the FCA unplugged so i could start the truck and move it into my shop. once i got it into the shop, everything was, and still is, working fine. i pulled the engine wire harness out and went through it and everything was fine. could the FCA driver in the ECM be bad and randomly sending battery voltage to the FCA? or i am overlooking something else that could cause this?