another vote for a pre emssions cat
Hi there i have been working on trucks for years i have heavy experience in dpf and diagnosing. here to help out the most i can a also take useful...
i would use nexiq just make sure its not a knockoff!
loss of ecm power most likely do you get a check engine light when you cycle the key?
A EBP exhaust back pressure sensor will cause turbo related symptoms also I would unscrew it see how dirty it is and blow it out with carb...
as a diesel tech about 80% of my repairs are related to dpf egr issues, there is just to many factors that will throw the truck into a derate or...
make sure they check the egr cooler properly, loosing 2 gallons coolant a week is a lot. Coolant mixing with the exhaust gases from a leaking...