NOT going into regen

[99gt]

So about a month ago when the truck was in for regular mait Ford did a reflash with an up dated program...as to what’s updated i don't know. But ever since this reflash regen hasn't been working properly.

About 2 weeks ago we had to bring the truck in because it went into limp mode. We were told that it was our fault because we didn't drive the truck enough to clean the DPF and it was starting to clog up. I told them that according to my owners manual the operator has to do absolutely nothing to have the vehicle go into regen mode. ( seeing as this was one of the first 6.4L out, the truck originally would go into regen when ever it needed moving or stopped). Ford printed up a new regen "how to guide" for the new flash and gave it to me.

Jump forward to tonight, the check engine light comes on again and the message centre says " Drive to clean exhaust". So i went for a drive... a very looooong drive about 80kms to be exact and the truck would not go into regen mode.

I think this is starting to be a BIG problem.

IS anybody experiencing this?

[Cumminspower11]

Your dpf might be completely fried. Sometimes they will fill up and not ever get completely empty. May in a new dpf... Who knows...?

[Barchetta]

When "Drive to Clean Exhaust" message comes on, means it has already gone into regen and needs to be driven until complete.

This is a second tier message, the first one is "Cleaning Exhaust Filter" If you don't ever finish a cycle or enough of a cycle, you will get the second message that you saw last night.

Regens with a new flash don't last more than 20 - 25 minutes. My previous regens would last as long as 40 minutes, but not any more.