Cummins Emission Control Software and Hardware

[FFeiller]

wikipedia is open to information change that's it upside and it's downside.



i can't waite till the warantees run out and the expense is put on us to maintain these il conceived monsters.



how are the class action suits coming?

 

[Drdorian]

I think any Cummins service department can service an ISB5. 9 or ISB6. 7 but probably not under a warranty claim unless no Dodge dealer is available.



If the truck is out of warranty I know of no reason why a Cummins service department can't repair them.

This depends on the Cummins shop... . it was mentioned earlier that there was an agreement between Cummins and Chrysler. This agreement states that all warrantable repairs have to go through Dodge, a Cummins shop is more than welcome to work on anything you have. The only issue is in their electronic service tool capability. Dodge products use StarSCAN, Cummins specific products do not, so a Cummins distributor would need to spend thousands to purhase and maintain one. Of course, they can always do anything mechanically to the engine, it's just on your dime.

 

[MHammond]

a little off topic here, but what is the latest flash for 07. 5 and it's purpose.

 

[FFeiller]

am i to understand that the software and interface used by dodge is the problem and not the hardware?



90% of my driving is city even with a 4. 88 ratio 1500rpm is not doable in this city. driving in a lower gear with the exhaust brake on would be an economic nightmare. i only get 10. 4mpg in town as it is when empty and not towing.



i tow equipment from job to job and the 5500 empty is miserable to ride in so their are no pleasure trips.



i have only 4,000miles on it

 

[Bob4x4]

am i to understand that the software and interface used by dodge is the problem and not the hardware?



90% of my driving is city even with a 4. 88 ratio 1500rpm is not doable in this city. driving in a lower gear with the exhaust brake on would be an economic nightmare. i only get 10. 4mpg in town as it is when empty and not towing.



i tow equipment from job to job and the 5500 empty is miserable to ride in so their are no pleasure trips.



i have only 4,000miles on it

I don't think the engineers realized how many diferent ways the 6. 7's would be used. In 08 they have even gone to thinner cac's to try and keep the egt's up. Using header wrap to keep heat loss down to the o2 sensors too. They are trying... ... ...

 

[Drdorian]

am i to understand that the software and interface used by dodge is the problem and not the hardware?

Yes, that is the problem... ... when taking your truck to a non-Dodge dealer to get warrantable work done or to have repairs done. If the shop does not have the electronic tool to diagnose/test your vehicle then they are limited. Again, they can do whatever they want mechanically and I'm sure they'll do a great job.

 

[Bob4x4]

The Cummins techs have also not received any training on the 6. 7... ... ... .....

 

[Drdorian]

The Cummins techs have also not received any training on the 6. 7... ... ... .....

Yes, they have... the 6. 7 is called the ISB, or 6. 7B, or any other number of names. The main difference in the "industrial B" and the Chrysler 6. 7 is the gear train (Chrysler front, industrial rear). The aftertreatment on the Dodge is unique to that platform, but the base engine is not.

 

[Bob4x4]

I should have been more specific They have had no training on the areas that are having issues... ... ... ... ... ... ...



Bob

 

[HBarlow]

am i to understand that the software and interface used by dodge is the problem and not the hardware? ... ... ... ... ... .....

I would use different words to say basically the same thing. My understanding is that our Dodge trucks use hardware, software, and interface developed by Cummins specifically for the Dodge application because the Dodge application is not the same as a Cummins in a MDT.



I don't think anyone has an answer to your question, not even Cummins engineers. It is relatively new technology being used in a new application. The entire system seems to work quite well, at least in the 2008s and all cab and chassis trucks, but appears not to be perfected yet. Cummins is constantly monitoring reports and making minor revisions to software and hardware as needed to make the 6. 7 as troublefree as the 5. 9.



My '08 C&C has 25,000 miles on the odometer now. It has actually been troublefree. I have put a lot of highway miles on it relatively quickly pulling my own heavy fifth wheel at a gross combined weight of just under 25k pounds and other trailers not as heavy. When I'm home it is used as a daily driver puttering around town making short trips at low speeds.



As I recently reported, I experienced a CEL light just before a 3,000 mile trip pulling a trailer. The truck started and ran normally so I continued on as planned. I made the trip with the light on and then took the truck to a dealer.



The dealer tech told me the P0191 code indicated a problem with fuel rail pressure. He checked the rail pressure and it was normal so he attempted to pull a pressure sensor module from parts but got a printed message from Cummins advising him that in most cases the fuel pressure sensor was not bad, the ECM only "thought" it was bad. The message said that a software update was expected to be released in October. I was able to confirm that with Cummins. The ECM later cleared the CEL and the light has not reappeared.



I don't think you have anything to worry about if you keep the engine rpm up between 1800 and 2,000 rpms and work it daily. Lugging it around at 1500 rpm or less might cause it to plug up with soot.



It won't be as economical as a light duty pickup running empty but a Ram 5500 is a "TRUCK!", not a truck.