Welp, I broke down and gave it my best shot last week... O/OP rant

UPDATE...

TL/DR; It wasn't the injectors, or computer, or harness, it was the 25$ delta P sensor.

Longstory..

Got the truck out of the shop, paid the whopping bill of $3547 for MCM computer replacement, and Dyno test. Freightliner Dallas South was nice enough to give me a break on the $70 of shop supplies. They swapped Motor Control Module and flashed my old MCM program (Body Module faults and all) to the new one. Put it on the Dyno where it performed well (2020 400 HP DD13 at 540K miles put down peak 337 HP at the wheels, 28 PSI). I paid and drove around for a few 50 miles running errands bobtail. Had to get food cause the fridge was off for 3 days, etc. I had to cancel all my loads anyways, and the next load out of Dallas worth a #### was 45K lbs going to Williamsport MD. So I waited around, and just bobtailing around I knew the truck still wasn't running right.

Sure enough, picked up a loaded trailer in Dallas, 79k gross now, and a 100 miles later truck threw the same codes and derated rated about 30 minutes out of Texarkana. I just shut it down for the night. To be honest, had a good cry and thought about giving up, cause it's been 2 weeks now without revenue, 8K worth of parts, labor and hotels, and I just went through my Month's $$$ reserve.

Quit crying cause that don't solve anything, and hooked DL8 to it again and went through everything, and noticed on an SCR test my Delta P was high at .38 deviation. Truck has plugged a port before with soot, and last time it happened was last winter and I idled for extended days and nights in Wisconsin sub 0 degree weather. But it threw the code for DeltaP pressure low, or high, can't remember.

Sure enough, one port was plugged with soot, I coat hangered the plugged port on the bypass pipe, wiped the soot off the sensor, reinstalled, and the truck immediately sounded better, went through a regen as soon as temps came into spec, and ran like it should pulling the hills of TN and VA on I40 and I81 with 79K lbs. I kept it in manual all of this run to keep the RPM's up to blow all the built up crap out of the EGR system.

When I take off and get it back home, I'mma pull all the EGR pipes and clean them, they're probably filled with soot. I might pull the EGR cooler and either replace it or clean it, I dunno.

But it's running now, I replaced 8K worth of parts that didn't need to be replaced, and I've got to run another week or two so I can pay the mortgage.

Just wanted to rant and update.

 

Purple power is good stuff.

 

I'm a tanker guy, and haul a lot of Hazmat class 8 Caustic wash that Dairy's and Brewery's use to slug through their stainless pipes to clean them.

Nasty stuff. Get it on your skin and it starts burning in a minute. 3 minutes and you're gonna have a scar.

I usually blow down my hoses and catch it in a bucket to take to quala and wash out. I bet that stuff (diluted down) would wash the hell out of that soot in my motor pipes.

 

I run Hot Shot Secrets LX4 Lubricity additive, at the minimal dose, all year long. Just to add Sulphur for the Bosch High Pressure Fuel Pump (who claims it's GTG on ULSD.)

In the winter I add minimal Howe's for anti-gel purposes if I head north, and especially in the shoulder seasons, before the refineries' add their additives at the rack.

I add just the minimums because, while those manufacturer's have shown proven wear scar results and longer lasting fuel system components, they make no guarantees on burn off and how those emissions can effect your DPF and SCR filters. Meaning it might save you HPFP, but, it might cause you to change your SCR filter more.

Detroit Diesel recommends #1 or #2 ULSD diesel, and no additives be run. Up to B20 is approved.

 

Words to live by.. I've got $27K left owed on this truck. I'll have it paid off summer of next year. This fiasco wouldn't have hurt so much If I hadn't just put $8k worth of new Bridgestone tires on it, but I wanted to get them worn in before winter.

Don't worry, something else will break next week.

I've got credit cards, but they cost money. I'll survive, just have to stay out another few weeks.

I dunno about a new truck, good friend of mine from KAG O/Op running food grade bought a new Pete 589 with ISX15, 2 years ago. First 6 months he was in the shop for 2 months total downtime fixing warranty electrical issues. He lost 2 months revenue on a new truck, no compensation from Pete. Lost Revenue will kill you, you still gotta make those payments.