Cummins Isx Fuel Rail Pressure Sensor

Seized ceramic plunger compared to how it should look normally.

Cummins isx fuel rail pressure sensor. 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. Fault code 559 injector metering rail 1 pressure data valid but below normal operating range moderately severe level. These fuel pressure sensors effectively measure fuel pressure in the fuel rail alerting both the evap system and the fuel system to leaks. Fuel pump actuator 13.

Replacement restores engine performance. 2013 peterbelt 386 isx 15 cummins. This was a close call. High pressure fuel pump outlet 14.

Pressure side fuel filter inlet 9. High pressure fuel pump inlet 11. High pressure relief valve and drain 18. Fuel rail pressure sign.

Last time around 2000 miles ago this sign came i went to peterbilt dealer they changed the fuel filter and scr nox temp sensor. Then i run around 500 miles this sign came again when i try to climb at moutain. Pressure side fuel filter 5 micron 10. High pressure fuel pump 12.