Cummins Isx Fuel Rail Pressure Sensor

Fuel rail pressure sign.

Cummins isx fuel rail pressure sensor.

High pressure fuel rail supply 15. Fuel pump actuator 13. Besides injector lines this rail also features a return line and pressure relief valve responsible for relieving excessive pressure and a rail pressure sensor that tells the ecm on board computer what pressure is at the rail which can be as high as 30 000 psi and as low as roughly 4 000 psi. Then i run around 500 miles this sign came again when i try to climb at moutain.

Seized ceramic plunger compared to how it should look normally. High pressure relief valve and drain 18. The engine control module ecm has detected that fuel pressure is lower than commanded pressure. Fault code 559 injector metering rail 1 pressure data valid but below normal operating range moderately severe level.

High pressure fuel pump inlet 11. High pressure fuel pump 12. Pressure side fuel filter 5 micron 10. These fuel pressure sensors effectively measure fuel pressure in the fuel rail alerting both the evap system and the fuel system to leaks.

Fuel pressure sensor location 17. This was a close call. High pressure fuel pump outlet 14. Last time around 2000 miles ago this sign came i went to peterbilt dealer they changed the fuel filter and scr nox temp sensor.