Perrysburg Dodgeboy wrote:
Received a notice of a ecm reflash 2 weeks ago. After having it done, that night going to work a notice came up saying diesel particulate filter @ 90% please drive at highway speeds when safe. Have never seen that before the reflash but I do know all the DEF diesel trucks will do passive regens every 200-300 miles. In the Ecodiesel you are not notified until you hit the active regen or your filter is at 90%.
Wounder if the EPA made some changes that drove the reflash?
Don
Correction don... A passive regen is the normal exhaust temp burning some of the particulates in the DPF. An active regen is when the exhaust temp is increased via diesel fuel/vapors is introduced into the exhaust to drive the temps way up to burn the particulates in the DPF.
Your reminder to drive to clean the exhaust message was because normal passive regen wasn't burning the particulates and/or active regens were never completed because theres no message to tell you a regen is in process and the DPF at 90% was about to reach critical mass.
This is why I like Fords method to display when a regen is in process so the driver can make a decision to drive the truck to complete a regen rather than to shut it down during a regen and have the excessive heat cook your turbo and also to allow the DPF to continue to build soot to the point where you're forced to drive until the regen process has been completed.