Wintertime is here!

Last trip over North Cross this year hauling hay, the pass report said, "slush on roadway, no restrictions", thankfully I was pulling one of our 53' vans and not the B-trains.

Fabbed up a new bumper for the 9400, the oem bumper is just too flimsy for how we use the truck and I've straightened it too many times. I still need to make a guard underneath to protect the ABS valves as that has been an issue this year.

Scott the owner of the business has been complaining of low power, the intake manifold pressure sensor was reading wrong so I repaired that, percent engine load is still generating weird numbers and I can't get a straight answer from anyone on exactly how that number is calculated by the ECM, I would tend to assume fuel rate, percent throttle, and boost pressure but all those numbers are correct so there must be something I'm missing. Also this engine uses ambient temp to determine how fast the turbo needs to spin, that sensor is reading wrong but no one at Motor Trucks is apparently capable of looking that sensor up and ordering me one. My frustration level with almost all the parts departments that I deal with is reaching new highs.

Recalibrating the transmission in our T7 New Holland, learning to work on AG equipment is interesting, most of what you need to do can be done through the console display and key sequences.

Fuel contamination issues

A brief pictorial history of the truck that pretends to be my service truck when it isn't stranding me outside of cell phone range. 2001 Duramax, major fuel leak codes and 2000 rpm derate under load, went to 3 shops that "fixed it" before I worked on it. They put in 8 new injectors, two fuel control modules, and reflashed it. None of which helped, at all.

This is the steel fuel line running along the frame rail, the rust scale inside the line allowed air into the line with the engine running but as you shut the engine down the scale would seal the pin hole and prevent an external leak.

The fuel tank pickup screen in the front tank was almost entirely plugged with dirt and rust scale, it was enough of a restriction that under load it would suck the fuel primer button down and effectively turn off its own fuel.

More fuel system issues, that is a metal shard... The fuel pressure regulator stuck open, truck would die at stop lights and foot to the floor it would barely stay running.  No fault codes.

Electronic issues for a change, intermittent electrical death... Instrument cluster failure and transmission controller faults (driving down the road the instrument cluster would die and transmission would default to neutral).

Found a major voltage drop on the Ignition 0 circuit due to burned contacts in the ignition switch.