I have been looking at buying a new truck; Dodge Cummins has been my truck of choice since I was 8 years old. Recently however after looking into it the new emissions on the 6.7's require a particulate filter. I was told by a freind who has one that it becomes a problem when 4wheeling, so I asked my dealership and was told that after 5 minutes of operation at less than 2000rpm the filter must get regenerated by running at 45 mph for 20 minutes. For me though this is not possible most of the time as farming often requires extended periods of ideling while feeding, stacking hay, working cattle or pulling trailers off road. After reviewing articles about the 6.7 meeting the 2010 emissions it has become clear that the particulate filter is here to stay, so my question is has anyone had experinces with the particulate filter becomming plugged if it is not regenerated, if so what does it take to clean it. My second question is does anyone know if it is possible to get the particulate filter removed and still meet the 2007 emission standards. I was told by my dealership that the filter can be removed but the truck will not run over 2000 rpm, is it possible to remove the filter and get the computer remaped?

I have been a cummins fan for the last 18 years, have had great luck with them and would like to buy a 6.7 (like the engine break) after the kinks get worked out but with the particulate filter being an issue I just may look at buying a PowerJoke, I won't buy a GM since no manual transmission is avalible anymore.

Any advice?

 

The way I understood it, the truck could regen when it needed to while idling. It just automatically bumps the idle up to do it.
The first 6.7s had issues with not wanting to regen at all and some DPFs clogged up and killed the truck. That was fixed with an ECM reflash. Now they have come out with another reflash to help improve the mileage.
All of the big 3 have emissions stuff on them now. The Fords are having problems with their EGR valves, where the Cummins doesn't use a valge that needs to be periodicaly cleaned and/or changed.
I don't believe that it will only idle for 5 minutes before needing to regen either. It is only supposed to have to regen every 800 miles or so. Short trips without letting the engine come up to temps could cause the DPF to clog sooner though.
If prolonged idling is required, you can use the high idle feature (get the dealer to enable it) and you can bump the idle speed up and help keep the DPF hot enough to keep itself clean. Once you get the idle speed above 1000 RPMS, it's not considered idling anymore

 

How could running at 45mph help any if it has to run higher than 2000 RPM's?

 

I have a 6.7L I farm, stack hay, work animals, and load animals in the stock trailer. I have hog, an beef . I leave the thing funning the hold time. i have about 5500 miles on mine and i have never had it rejen when i was in the truck or driving.

---AutoMerged DoublePost---

I have a 6.7L. Im also a farmer i have hog an beef. i leave the truck running all the time for up to 1 hr. with you a problem. i have almost 6000miles and i have never had mine rejen with me in it or driving it.

 

Thanks for the input guys. I have been asking around and according to my mechanic the same particulate filter is on Fords and GMs. It is made by Bosch, Dodge is the only truck that has been having problems. From what I have heard and read on this post I am getting a little less leery about buying a 6.7. I think Ill still wait a while to see what kinks get worked out yet. I would still prefer if the particulate filter was removable altogether because I like the sound of those strait piped diesels. Thanks I look forward to hearing what else there is to be said for the 6.7

 

dpf can go bye bye on the new duramaxes with a turner and through no codes (usally)

 

All three of them have had problems as this is new technology on light duty diesels in the US. Eventually they will have the issues worked out. Pick which one you like the best and go for it.

 

I have no fear of the new 6.7 I have one on order for early spring...some guys up here are taking the DPF off, but you are now non-compliant for the 2007 emmissions requirements. I work in the oilfield and these trucks run all day long while we are working and there have been very few issues with regen while idling. We all high-idle while sitting normally anyways.

 

ya mine idles all day long on the rightofway up here in wyoming it just says dpf cloged but always cleans it self out on the way back in to town

 

thanks guys finally ready to buy one, not ready to afford one anymore. Has anyone had any bad experinces with the new six speed auto.