12-31-2011 12:33 PM
Got a c 13 in the fleet that 6 months ago had a code for #5 valve actuator, replaced assembly and had no more problems. Last week had another code now for #2, replaced all actuator assemblys and the next day light came on again and now it is for low oil pressure to valve actuators. Spent a couple of hours going through all the tests and only found that the pressure sensor was loose, but not leaking.
Drove truck (bobtailed) 30 miles and no light and no problems. Driver picked up truck and hooked to a loaded trailer and made it 2 miles down the road and light came on and derated power. Am i to assume that this system only works under heavy engine load? And what is the next step? Should the ecm have been reflashed after replacing assemblies? Could this be an ecm issue? Pressure sensor tested perfect . Is there any way to measure oil pressure in the rail? Thanks for any help.
01-17-2012 04:08 PM