Truck Broke Down - After Treatment Problems

They swapped my sensor out in Cheyenne at the DC shop. That took about 20 minutes. Then the FIVE forced regens with the laptop hooked up took another six hours outside the shop.

But....once all that was done, I had no more problems with after treatment system parts. Good luck with yours there, Jamie!

They swapped my sensor out in Cheyenne at the DC shop. That took about 20 minutes. Then the FIVE forced regens with the laptop hooked up took another six hours outside the shop.

But....once all that was done, I had no more problems with after treatment system parts. Good luck with yours there, Jamie!

Pack rat, why the 5 regents??? Is that common?

The Freightliner technician told me that the computers involved with the after treatment system needed to calibrate between the new sensor and the existing system parts and pieces.

"This may take awhile" is what he said. On that, he was definitely correct.

well... 300,000 miles.... might want get technician visually inspect DPF and other exhaust filters to make sure it's not plugged with ash. If it is, have them replace it and your good for another 300k miles. my professor told me that dpf filter is very common to get replace or taken out of truck to send to another shop to clean it by injecting high pressure air ( I forgot how many psi.. I think 5000psi) to break the ash that get overtime build up and block flow of exhaust which trigger error readings on dash like check engine light. Also, regen will not burn ash inside the DPF filter.

The Freightliner technician told me that the computers involved with the after treatment system needed to calibrate between the new sensor and the existing system parts and pieces.

"This may take awhile" is what he said. On that, he was definitely correct.

Yeah. Tell your professor that's usually performed any time after 250,000 miles. For the last 5+ years, shops have their own ultrasonic vibration/bake machines, so these DPF filters don't need to be sent off site to a third party. I don't need a technician to look at the filters for me.

Called the dealership this morning to be informed they don’t think it’s the nox sensor that went out, and they’re not exactly sure what’s wrong right now and they’re going have to troubleshoot it some more after it does another regen.

Sounds like your fiasco that you had recently down near Pueblo, PackRat!

Laura

Sounds like your fiasco that you had recently down near Pueblo, PackRat!

Laura

No because we knew that was a failed radiator. Just took that dealership seven days to perform a four hour job.

My car is in the shop because I hit a deer. Going on 5 weeks for a hood, a bumper cover, 2 headlights, a grille and radiator support.

Back in August, it took a week to change the axles and brakes smh.

They be "Milkin the Clock" that's the problem with hourly techs diesel or auto ! Heck these new trucks have the buttons in the steering wheel to bring up any codes, then google the codes, and WALLA ! But nooooo, they gotta hook up their laptops and fiddle with this n that, spending 3+ hours at it, when usually the real problem was staring right at em lol (happened with my truck at CRST, BOTH nox sensors needed replaced, and I diagnosed it, and told em but they ain't gunna listen to me lol.......Guess what, THATS exactly what they ended up doing. BUT 1 tech stripped out the hole just before his shift ended. So they had to wait for the next shifts mechanic to finish it up after re-threading the hole DUHHHHH

LOL I told em hell, I coulda drove home, got my Snap-On rethreader kit n fixed it faster....That was all on a PM, that took em 18 hours to complete it all !