before it kicks into smoke control it pulls fine builds boost, then after no boost an egr is shut off an black smoke like crazy. will dddl hooked up i've noticed it's going into smoke control mode around 35mph an comes out when you drop down below that an back in again. no check engine lights or error codes to point in the right direction. So the other day it kicked outta cruise control, lost power an started rolling coal. Hope this helps and good luck.Hey guys my truck is giving me grief, an i'm not sure where to go next. These trucks are as good as you take care of them, abuse them and they will ultimately abuse you, no lie. I'm sure if they tweek the habits the MPG might go up.?.? Most, not all, of drivers complaining about MPG are those that have bad driving habits.

In other words, I don't jump on her when the light turns green, just build up speed at a moderate / sensible manner. Metaphorically speaking - I keep an egg under the diesel pedal. Keep in mind the 7MPG is an average, heavier loads and hills are taken into consideration. I never move her until she reaches a minimum of 150 degrees, never shut her off until 3 - 5 minute after running on the highway. I must inform you I baby my truck because it is my sustenance. This is MY experience and I can tell you that I am avergering over 7MPG. If you have the knowledge of doing the work, well you just saved yourself the labor. I was quoted at Stoops Freightliner IN for under $300 not including labor. I want to remove and replace the EGR valve, which are not that expensive. Remove and replace the Doser Pen ($128.00)Ħ. Remove and replace the IMAP / CAC sensor ($35.00)ĥ. Remove and replace the Delta P Sensor ($130.00)Ĥ. A list of what I do every 200K and so far so good with a working EGR system (THANK YOU RAWZE):ģ. It cost me much more than the $75 sensor cost, but I learned from it - won't happen again.Īs instructed here by the EGR Guru - follow the advise and you will save yourself a lot of headaches. The only problem I encountered on my truck was an inlet temp sensor went bad and Freightliner, as usual, was using the dart method.

My experience with this truck is keep the soot out of the pipes, change the EGR sensors every 200K and bake your DPF once a year. I have a 2010 Cascadia w/ DD15 engine, 455HP w/ over 1 million miles.

Venturi pipe dd15