I've got roughly 2k miles on my new 6.4. I just got back from a 1200 mile trip I didn't notice a regen yet. The only off thing that has happened is that when I backed off a bit on the throtle after passing on an up hill pass, the engine sputtered or missed a couple of times and then just kept going like nothing happened. I'm wondering if that was a kind of mild passive regen?

 

Thats the same thing that happens to mine when it goes into regen. Thats the norm from what I understand. Towing over 1600 miles never felt it go into regen.

 

Maybe because at constant highway speeds, you don't get the soot build up as you would driving in town, hence you don't have the pressure build up in the dpf???

 

On certain F-250, F-350, F-450 or F-550 models with 6.4-liter Power Stroke motors manufactured between April 3 to May 21, 2007 may have faulty fuel injectors in cylinders 1, 5 and 7 that need to be replaced with new units. Ford issued a TBS on this you might want to get checked out.

 

We have an 08 ambulance. I'm concerned that in a crowded ER ambulance bay that it's going to damage another ambulance. Quite often they are parked very close together and our 08 regens a lot due to how it gets driven.

We'll see.

Mike

 

Since it's my post I'm allowed to hijack it. How hard is it to open these new hoods with a replacement bumper/grill guard? I've got a ranch hand bumper/grill guard on my 02 but it looks like the design would have to be tweaked to work with these new hoods. What brand are you getting and will you post pics after it's installed?

 

Same here. When the truck had around 500 mi on it. I noticed a sound similar to a backfire in the exaust. It did it twice in one day so I stopped by the dealer to ask them about it and of course it would not duplicte then. When I left the dealer I stopped by Wal-Mart and as soon as I placed the truck into park it was in regen. I noticed this again the next time regen happened about 1 week later. It has not made that sound since and I have 1100 mi on it now, also a few regens cycles have gone by.

FWIW, my dealer has not heard of anything like this... I am glad I found this forum with information about my specific truck, thanks to all.

 

Noob here guys...What is a regen?

 

Makes me nervous as heck. We had a really dry winter and currently have very high fire hazzard conditions. If it was breezy, which it often is, a don't think a fire extinguisher would be enough to put out a grass fire once it started.

 

oops, wrong photo

 

Drive in a big circle. It's called a controlled burn. You may need to get a permit though. Makes you wonder if we should be registering these trucks with our local fire departments.

 

What is a regen?

 

regeneration is a product of the epa. The diesels of today in dealing with the soot and particulates in the exhaust, have a diesel particulate filter. This filter will start to get plugged with particulates. The pressure and temperature sensors come into play, telling the pcm to go into "regeneration". The pcm commands the piezo electric injectors to fire on the exhaust stroke creating more heat burning off the particulates. The temperature sensors verify that the regeneration is working. Your vehicle can also go into regen just by amount of drive cycles. There was a video circulating when the 6.4 first debut, showing a truck with an injector broken, dumping raw fuel into the exhaust, creating a flamethrower effect. This started the concerns with excessive heat from the exhaust. While it is hot, one would have to be excessively irresponsible to create a grass fire. Time will tell however, there has been recalibrations issued to fine tune regeneration characteristics, those so far have been very successful.

 

The term regen, or regeneration, is the process of oxidizing soot (carbon) that is accumulated in a particulate filter (dpf). There are 2 types of regeneration, Active and Passive. Active regeneration is the process of injecting raw fuel into the exhaust system to produce an exothermic reaction in the diesel oxidation catalyst. This heat is used to oxidize (burn) particulate matter (soot) trapped in the filter. Passive regeneration is the process of using the natural heat created by the engine to perform the same function. Passive regeneration only occurs IF the engine outlet temps are high enough such as when the engine load is greater than 50% for extended periods of time. Passive regeneration is free, for the most part, as it doesn't use additional fuel to create the wanted effect. Active regeneration is used when passive regens aren't accomplished, such as when the engine load is less than 50% or duty cycles are considered short, i.e. short trips.

 

I have ordered a replacement front bumper with grille guard from South Texas Outfitters. It is to ship to me around the 1st of September, after transit time. I have attached a picture from their website as to what it will look like. The one that I have ordered is black. I will let you know when I receive it.