hi, i'm working on a cummins isl9 and i keep getting a red stop engine light on. the code is 0555 which is Crankcase Pressure – Data Valid but Above Normal Operational Range – Moderately Severe Level, i have replaced the crank case filter, the crankcase filter box, the crankcase pressure sensor, oil drain tubes, check valves, breather tubes,oil separator plugged. still reading 24.5 inH2O when accelerating. any ideas please help thanks
Help with cummins isl9 280
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by joet247, Dec 12, 2019.
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
Did you check the wiring out yet??
pushbroom Thanks this. -
You most likely indeed have excessive crankcase pressure assuming your sensor is rational 0.0inhg KOEO. Next steps would include isolating the turbocharger and air compressor one at a time to note a decrease in pressure during operation. From there with no change its teardown time or run cylinder leakage test to check rings.
-
-
I'm Second Goodysnap! Had same issue on ISL9, change crankcase filter and still had code for crankcase pressure. Perform compression test and cylinder # 5 and 6 were bad..
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.