Catalyst Full

[Hardegger]

Im hoping someone has a solution for the "Catalyst Full" syndrome. Last September i was in the back country elk hunting and my Catalyst percent keep getting higher and higher.

Getting in, we drive approximately 45 miles back in at slow speeds, the terrain is very rugged and you must go slow there is no opportunity to drive at highway speeds for regeneration. After a couple of days driving in the back country my Catalyst keep reading higher and higher and I know that it got to at least 90%, and it could have been higher. I was very concerned that I would have a shut down 45 miles back in terrain where a vehicle couldn't even be towed from easily. Any ideas? What i did do was to put the truck into 4 low and then in 1st and it seemed to hold things steady.

Need some help before this occurs again in Sept. '09. Can we just not use our trucks off road

 

[DieselLady]

DPF DELETE, DPF DELETE, DPF DELETE. Or just bring the right size tools so when it finally clogs up you can remove the DPF and drive home. It won't hurt anything, just derate the engine as the computer trys to keep the dpf from clogging completely. If you think you will get any sympathy from the EPA, guess again. I had a friend who owned a wind farm that was starting fires with his truck. EPA said they didn't care, you are not allowed to remove it.

So I guess if you want to play by the rules, you will eventually have to walk out and leave your truck behind. #@$%!

 

[HBarlow]

Im hoping someone has a solution for the "Catalyst Full" syndrome. Last September i was in the back country elk hunting and my Catalyst percent keep getting higher and higher.

Getting in, we drive approximately 45 miles back in at slow speeds, the terrain is very rugged and you must go slow there is no opportunity to drive at highway speeds for regeneration. After a couple of days driving in the back country my Catalyst keep reading higher and higher and I know that it got to at least 90%, and it could have been higher. I was very concerned that I would have a shut down 45 miles back in terrain where a vehicle couldn't even be towed from easily. Any ideas? What i did do was to put the truck into 4 low and then in 1st and it seemed to hold things steady.

Need some help before this occurs again in Sept. '09. Can we just not use our trucks off road

Your story is troubling. I was aware of the risk of setting grass fires when driving off road but hadn't thought of the problem of driving for a period of several days at low speeds, off road, in remote areas like a hunting trip where the system could not regenerate.

Why don't you send an e-mail question to Cummins, Inc. via their website. Or you could send an e-mail to Robert Patton, TDR editor, and ask him to pursue the question with Cummins. Robert asked for such questions in a TDR article recently. He was compiling a list of questions related to ISB6. 7 engines to ask Cummins.

I wish Cummins would provide us with information so we could hook up a switch with jumpers to the ECM that would allow manual override of the ECM and regeneration on demand.

The driver could regen the system while traveling on the highway an hour before he was planning to drive into a situation where regen would be impossible or create the risk of starting a grass fire.

 

[Scrappy]

some of the aftermarket programmers are capable of forcing a regen. My Bullydog Power pup can

 

[Shelby Griggs]

I wish Cummins would provide us with information so we could hook up a switch with jumpers to the ECM that would allow manual override of the ECM and regeneration on demand.



The driver could regen the system while traveling on the highway an hour before he was planning to drive into a situation where regen would be impossible or create the risk of starting a grass fire.

Good idea, you shouldn't have to defeat the EPA stuff to use these trucks off road without torching the brush OR plugging things up.



I heard there is a regen override on some larger trucks, but don't know if that is just a rumor or what. I suspect Cummins/Dodge doesn't think the non professional driver is smart enough to manually run a re-gen.



I would like the option of running one just before going into terrain that might be a fire hazard, that way nothing unexpected happens!



I would also like to see a lockout below 30 MPH and/while in 4-low.



Some of these issues are huge for me and one reason I am waiting another year or two (at least) before moving out of the 2001.



SHG

 

[SNGLESHOT]

I am not a lawyer but I have a friend who is with JAG on post here with the Army. The subject came up and he said if you read the law it clearly states in the document that "there shall be no USER INTERFACE capability". That means in lay terms that WE cannot have ANY control over the system at all. Once again... some beaurocrat making decisions that are illogical and stupid. Playing by the "rules" just plain sucks then.

The Dodge '*******' here in Sierra Vista and mechanic manager told me straight up that running with cruise control switch on shuts down re-gen. If that WERE the case then that in itself would be a form of "user interface" right? Pretty sad bulls**t . . ... if you ask me as I know from TDR wrench turners that this is just not a true statement. :-{}

My gripe is at least give us an idiot light that indicates a re-gen or a way to assess the percentage of fullness BEFORE going off road and taking that chance. I know many guys with TDR have their own ways of telling but I still cant tell with my rig and that is a whole new (old) thread in itself. Thank you for bringing this up as I have never considered this possiblity before. I have been at 100% "power reduced-see dealer" before and the truck did keep running (2 days) up until I could get it in and re-flashed to fix the problems I was having. So far so good.

 

[Tinman]

Your absolutely right that we shouldn't have to defeat the engine systems to make the truck run correctly in situation we drive in. But that's just not the real world. As mentioned above the gov. doesn't care. But I, the end user, do. Case in point, the emission stuff on my wife's Liberty CRD. The egr and CCV are poorly designed. Left stock, they cause lots of problems (like the CCV dumping quarts of oil into the IC over a period of 4-5K miles). The truck is out of warranty and I'm not going to spend the money and time to remove and clean the IC every so often. Besides I want 300K out of this thing and it just isn't going to do that with the intended emissions equipment. So the end user has to decide how they want their truck to run and the risk of problems that might occur with the changes, legal or otherwise. That's the games we play in this "free" country.

 

[DieselLady]

Your absolutely right that we shouldn't have to defeat the engine systems to make the truck run correctly in situation we drive in. But that's just not the real world. As mentioned above the gov. doesn't care. But I, the end user, do. Case in point, the emission stuff on my wife's Liberty CRD. The egr and CCV are poorly designed. Left stock, they cause lots of problems (like the CCV dumping quarts of oil into the IC over a period of 4-5K miles). The truck is out of warranty and I'm not going to spend the money and time to remove and clean the IC every so often. Besides I want 300K out of this thing and it just isn't going to do that with the intended emissions equipment. So the end user has to decide how they want their truck to run and the risk of problems that might occur with the changes, legal or otherwise. That's the games we play in this "free" country.

AMEN. I couldn't have said it better. I too have the Jeep Liberty CRD. And I too have had to vent the crankcase to the atmosphere. I had so much oil in the turbo from the vent that it was running out and down the turbo and then down the eng block. Dealer answer to the problem with only 10k miles on it. NORMAL. Who do they think we are,,,, Turnip farmers. ???:{

 

[Bob4x4]

The latest software allows regen to happen even at idle if it is needed... ... ... Cali will be smogging diesels very soon and the other states will follow. The roadside testing has already begun.

 

[DieselLady]

Hi Bob,

Roadside testing of what? Big Rigs? Or both pickups and big rigs??

 

[Bob4x4]

Hi Bob,

Roadside testing of what? Big Rigs? Or both pickups and big rigs??

Diesel pick-ups,Bar and chp set up on Alondra just north of the 605 last week.

I am sure they will be hitting up random sites.

I can tell you that mach 1. 6's ported head and a PDR 35/14 passes the smoke test :-laf

They did not like the comp box and were unsure of the AFE set-up. being a 2nd gen 24v no cat issue.



Bob

 

[DieselLady]

Are they doing visuals? Cause If they are they will be hauling me away!!!

If all they are looking for is smoke I will be fine.

 

[Drdorian]

The Dodge '*******' here in Sierra Vista and mechanic manager told me straight up that running with cruise control switch on shuts down re-gen. If that WERE the case then that in itself would be a form of "user interface" right? Pretty sad bulls**t . . ... if you ask me as I know from TDR wrench turners that this is just not a true statement. :-{}

The cruise control myth is a product of a uninformed dealer and technician. There used to be a screen in the StarSCAN tool which stated that during a mobile desoot that cruise control had to be off in order to work. No idea why this was there, but cruise control DOES NOT disable regen. I heard this was going to be fixed but have not seen a StarSCAN in a while.



My suggestion is to find a dealer/techincian who knows what they are doing.

 

[sag2]

Im hoping someone has a solution for the "Catalyst Full" syndrome. Last September i was in the back country elk hunting and my Catalyst percent keep getting higher and higher.



Getting in, we drive approximately 45 miles back in at slow speeds, the terrain is very rugged and you must go slow there is no opportunity to drive at highway speeds for regeneration. After a couple of days driving in the back country my Catalyst keep reading higher and higher and I know that it got to at least 90%, and it could have been higher. I was very concerned that I would have a shut down 45 miles back in terrain where a vehicle couldn't even be towed from easily. Any ideas? What i did do was to put the truck into 4 low and then in 1st and it seemed to hold things steady.



Need some help before this occurs again in Sept. '09. Can we just not use our trucks off road

First off don't let anyone scare you into doing something stupid. Since last year the flashes have done a tremendous job of keeping the DPF from plugging. Just make sure you have the latest flash (currently BA for 07) and you should be fine. Also if you keep clean filters, oil changed with correct type, and no power enhancers it is just more insurance. I can't recall the last truck I have seen with a plugged DPF. I'm not sure running in low range will keep a regen from occurring, but keeping some heat in the exhaust is better than worse for burning off the soot.

 

[Bob4x4]

Are they doing visuals? Cause If they are they will be hauling me away!!!

If all they are looking for is smoke I will be fine.

Popping the hood. looking underneath,checking for all mods,then run the snap idle with an opacity meter... ... ... ... ... ... ... ...

 

[Grumpy John 4x4]

Smog checks

Hey Diesel Lady they will be testing years 1998 up! My 1994 is sure looking good right now!

 

[DieselLady]

Thanks Bob, Yep, I'm in trouble. I knew they would be testing, but I didn't know they would be doing roadside inspections. Guess the new ATS DPF is looking better all the time. I hate feeling like a criminal just cause I want to make my truck run better.

And Grumpy John. Your 94 Rocks, but there is a lot to be said for my Mega Cab too. Not to worry, we will find a way around all this, one way or the other. Just think, Next year it will be Urea injection. Yummm!!

 

[Tinman]

What does the testing consist of?



I was wondering if, hypothetically, one could take a hole saw and run it thru the restrictive areas of the exhaust to open it up. Leave everything else untouched.

 

[Bob4x4]

Thanks Bob, Yep, I'm in trouble. I knew they would be testing, but I didn't know they would be doing roadside inspections. Guess the new ATS DPF is looking better all the time. I hate feeling like a criminal just cause I want to make my truck run better.

And Grumpy John. Your 94 Rocks, but there is a lot to be said for my Mega Cab too. Not to worry, we will find a way around all this, one way or the other. Just think, Next year it will be Urea injection. Yummm!!

:-laf I Tryed to fill you in at Glamis but I was having way too much fun to get too serious.



Synthetic cow p*** just what I want to run in a 60k truck

 

[Bob4x4]

What does the testing consist of?



I was wondering if, hypothetically, one could take a hole saw and run it thru the restrictive areas of the exhaust to open it up. Leave everything else untouched.

The restriction of the exhaust is not the issue..... and no that can't be changed, back pressure is monitored. The 6. 7 is a very complex system,one change in calibration will require many more changes to keep up.

I am watching to see how the new Smarty works out... ... ... ... ... ...