No Regen with Cruise Control??

[Freebore]

I just had my truck checked by my dealer and the service writer asked if my particulate filter warnings came on when using cruise control. He said the truck won't regen if using cruise control.

Sounds like a load of BS to me - can anyone confirm this?

Also - does anyone know where to find a complete explanation of how this system is supposed to work beyond the DVDs and manuals? I'd like to know if there are 3rd party manuals or factory publications that go beyond what I've seen so far. I have the factory service CD but so far have not seen a lot of detail on operational theory, etc. There are a lot of assumptions I have heard on messages the overhead has, etc. My dealer did the AX update but not the overhead - was getting DPF plugged warnings continuously on vacation. When the other dealer did the overhead update the warnings disappeared. All the time I was high speed interstate driving with the cruise control on.

 

[jelag]

We've got 26K miles on our 08 5500 and to our knowledge we've never seen the re-gen happen. . this is a road truck for us and spends a lot of time on cruise control... .

 

[HBarlow]

Hmmm. Another puzzling question.



I drive with cruise control 99% of the time when at highway speed. I have wondered several times why after several days of highway towing my truck will go into regen mode the very next day when making a short trip around town. I don't know if it just happens to be when the ECM decides to regen or if it has been prevented from regen while towing using cruise control.



Sometimes when running at highway speed with cruise control on my pyro gauge shows higher than normal egt which makes me assume it is in regen but I can't prove it.



If someone with insider information and real credentials will publish a book explaining how the regeneration cycle works and how to use it best I'll be first in line to buy it.



Joe Donnelly, we need you!!

 

[DSTEPHENSON]

I went to Creede, Co running with cruise on and after 5 days of sighseeing in the area got a CEL . After many phone calls located a Dodge Dealer in Alamosa, Co, 75 miles from Creede. Got an appointment on Thursday morning so hooked up 5er on Wed and moved to Alamosa. Service manager said the DPF was partially clogged. Forced a regen and cleared light. So maybe the Cruise does have something to do with it.

NOTE: Before taking the truck to dealer I done the Key 3 times and P2453 displayed. Told Service Manager and he said there weren't any codes stored. I didn't think displaying the code could remove it from the system.

 

[THeard]

Do a search for Cummins Filtration, you will find what you are looking far.

The cruise has no effect on the re-gen process. Just watch your overhead, mine will be holding a steady 20 at 70 mph then start dropping to 18. 5 for about 20 miles then start climbing back up to around 19. 9. I've seen it numerous times, cruise on riding on the interstate.

 

[HBarlow]

Do a search for Cummins Filtration, you will find what you are looking far.

The cruise has no effect on the re-gen process. Just watch your overhead, mine will be holding a steady 20 at 70 mph then start dropping to 18. 5 for about 20 miles then start climbing back up to around 19. 9. I've seen it numerous times, cruise on riding on the interstate.

I found the pdf file you mentioned (with some difficulty) and read it. It did provide a useful explanation of the components and how they work but it was for the Cummins system and doesn't really apply to a Dodge Ram. Our Dodges use a MOPAR aftertreatment system, not the Cummins system described and explained on the Cummins website.



I sent an e-mail question regarding the regenation cycle to Cummins several months ago. The Cummins reply told me basically, don't ask us, ask Dodge because your system is a Chrysler system.



I might as well send a letter to Santa Claus asking for a new C-Dory boat for Christmas as send an e-mail to Dodge asking for an explanation of their aftertreatment system and the regeneration cycle.

 

[mcurtice1]

I drive highway every day with the cruise control on. Absolutely, my truck goes into regen. My pyro shows 1300-1400 degrees in regen and 1000-1100 when not in regen. I generally see a regen cycle once a day on a 60 mile round trip.

 

[courierdog]

I have 100,000 miles on my 2007 6. 7.
1. The DPF have Fleetguard part numbers all over it.
2. the Cruise control does not affect the Regen cycle.
3. running around town will clog up the DPF fast especially if you leave the automatic in drive as opposed to limiting it to non over drive gears.
4. my average fuel economy over the one year period is 20 MPG

 

[Shelby Griggs]

I have 100,000 miles on my 2007 6. 7.

1. The DPF have Fleetguard part numbers all over it.

2. the Cruise control does not affect the Regen cycle.

3. running around town will clog up the DPF fast especially if you leave the automatic in drive as opposed to limiting it to non over drive gears.

4. my average fuel economy over the one year period is 20 MPG

You must run mostly highway to get to 100K that quick! What kind of loads? 20MPG is impressive, especially if those 100K miles have been trouble free?



SHG

 

[JLDanner]

It's a wives tale, urban legend that won't die etc... #@$%! the truck absolutely will regen while using cruise control. I have a dashhawk monitor that shows when the truck is in either of two regen modes. I no longer need it to tell me though, as I can easily tell just by how the truck runs and sounds - it's a no brainer. While in regen mode the power ramps waaaaaay up (as the EGR stops) and the 6. 7 sounds like it's "knocking"... .



Infact the only time the truck won't regen is when you put the auto trans in park.



-J

 

[HBarlow]

It's a wives tale, urban legend that won't die etc... #@$%! the truck absolutely will regen while using cruise control. I have a dashhawk monitor that shows when the truck is in either of two regen modes. I no longer need it to tell me though, as I can easily tell just by how the truck runs and sounds - it's a no brainer. While in regen mode the power ramps waaaaaay up (as the EGR stops) and the 6. 7 sounds like it's "knocking"... .



Infact the only time the truck won't regen is when you put the auto trans in park.



-J

I think you're right. I believe mine regens with cruise control on also.



I can't think of any reason why the engineers would program the ECM so that it would not perform a regen cycle when cruising at highway speeds with cruise control activated.

 

[Drdorian]

1. The DPF have Fleetguard part numbers all over it.

1. The DPF does not have Fleetguard p/n's on it. The DPF is made by Tenneco and sold to Chrysler, as such there are Chrysler specific stampings/numbers on it. Cummins has design control of the system, so, you can say they own the IP and Chrysler owns the hardware.



If my dealer told me that cruise disables regen then I would look for another dealer..... those guys would probably charge you for a muffler bearing replacement next time you're in - so watch it

 

[bruiserbob]

Cruise/Regen

I was also told that it would not go into regen while on cruise control by a dealer in my hometown of Monroe, La. Since I have hardly ever used that feature, I really didn't argue with them, but seriously doubted the info..... I WAS one of those guys who thought doing everything right would assure me of being one of the owners that never had trouble... . I always run with the exhaust brake ON,NO IDLING or use HIGH IDLE, keep RPM's up using the manual shift selector, dealer serviced on/or ahead of schedule... . Got the 08 Mega in Oct '07 and not even a hiccup except changing out o2 sensor at about 10K... Yesterday with 11,330 miles on the clock the overhead chimed once and announced that the catalyst was 100% full... . this was the first warning EVER except for OIL CHANGES... . Since I have a full set of Optix gauges, I know for a fact that mine has been going into REGEN on an average of every 55-65 miles and takes an average of 15-20 minutes to run its course... ... Made it to the dealer with everything showing normal and running good, only to be told I would need the turbo cleaning procedure, EGR cleaning, and a new DPF installed... ..... GO FIGURE... . Since they won't have the parts until next week they said just go ahead and drive it normally. They cleared the MIL and reset the overhead and on the way home after a whole 5 miles I got the same EVIC message and another MIL... . still driving with no obvious problems and never went into LIMP MODE. Am I pi--ed???? YES !!!!

 

[grasmo]

Mine did the same thing almost to the tee. however mine started chugging and stalled ... it would start right back up and run for 4 seconds and then die ... ... start up again and run for three seconds then die... then it would not even start..... I could smell the lemons.

 

[dmclean]

I`m beginning to think (after seeing all these problems with the new 6. 7) that perhaps we all got lemons-this system was not perfected and was sold to the public before it was! No way a new truck should present with so many frigging problems! blue tech=bull---- tech!!!!

 

[Freebore]

Thanks for all the feedback, and yes - I believe mine has been doing the regens regularly while using cruise control, but really makes me wonder about where some of these rumors start. I'm going to talk to the service manager about it and see if they can provide documentation or a source. That kind of info needs to be corrected. Just like ignoring a failed DPF that has black soot in the tailpipe and history of DPF codes.

 

[RDHamill]

Mine worked just great until 85,000kms. at 45,000 the dealer did a reflash to the "AX", work perfect before and after the flash.

Then it got the "G30" recall, and a flash up to "AW" truck worked perfect, never saw a code.

then at 85,000kms it all began, MIL and EVIC "80% full. . 90%, 100%. Dealer forced a regen, and ordeed a new DPF. Truck ran fine while I waited for parts, and fine after DPF was replaced.

More codes came at 97,000kms but dealer cleared by way of a forced regen.

Today at 101,000kms within about 10 miles it went from working fine to dead.

Black smoke was wild, then it quit!

Was towed to a local dealer , they tried to regen but no luck. Another DPF is on order, 10 day wait !!!!!!!!

My dealer has been informed, he's contacting Chrysler as I told him if I have no truck for 10 days , I also have no business ! I told him that I'm asking myself " can I run a business with a Dodge"

meanwhile truck is 2 hours from home as is my trailer and cargo.

I'm less than happy right now !

3 trips to the dealer and loss of truck for 13 days in 3 months is NOT the plan !



wish me luck

thanks for letting me vent

 

[speedyjdl]

RDHamill, I feel your pain only mine is not near as bad. I have a 07. 5 and it is used to tow my welding trailer around. At 3,000 miles I threw a code and had to go in for the G30 recall. At 7,700 miles I got another code and got a new turbo. Both times I was able to get it in on a Saturday and got it back the same day so it didn't hurt business, but if I was in your situation I would be screaming for a rental or something.

 

[Drdorian]

Thanks for all the feedback, and yes - I believe mine has been doing the regens regularly while using cruise control, but really makes me wonder about where some of these rumors start. I'm going to talk to the service manager about it and see if they can provide documentation or a source. That kind of info needs to be corrected.

Freebore, I have been doing some digging/poking around at my local friendly Dodge dealer and I think I found the source of this confusion. When a tech sets up a truck to do a mobile regen there is a screen that pops up, it has some warnings and one of them says to have cruise control off. So, I think that dealers have inferred incorrectly from this screen that cruise control disables regen.

 

[RDHamill]

I'm wondering if it's possible that the tubes leading to the pressure sensor ( for DPF) which is mounted on transmission crossmember is getting plugged and not telling the ECM that it should regen , and therefore the DPF becomes plugged ???

any thoughts ???