Catalyst now 100% full! - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 43 (permalink) Old 08-05-2007, 05:05 PM Thread Starter
 
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Catalyst now 100% full!

After 3000 miles of trouble free performance my truck had the service engine warning lamp come on. I spent a day trying to figure out how to read whatever codes were stored in memory. My local Autozone was willing to rent me a code reader for $169 which they would refund when I returned it. I deceided to just take it to the dealer.

Then yesterday I got the CATALYST STAT series of messages starting at 80% FULL, then moving right on to 90% FULL. I deceided to try driving it on the freeway for an hour. I was a half mile from the freeway and just as I set the cruse control for 65MPH in 5th gear the warning went to 100% FULL. After an hour on the freeway it remained at 100%. So now I'm planning to visit my local dealer. I've got a choice of 3 or more dealers in the Sacramento area and I was wondering if anyone has found one who has had some success working on the 6.7s. After reading some of the TSBs requiring them to install a boot loader programs prior to reflashing the ECM I am getting woried. This is like having to reinstall all of you computer software including the operating system because your printer isn't working. I assuming that most of the 100% Full problems are not due to anything being full. Is that correct. Also I thought it was the DPF not the Catalyst that would be getting full. Am I wrong?

I'm trying to get a better understanding of this problem before I take my truck in for service. Other than fixing the 100% FULL problem I also want them to enable the High Idle feature. Is there a TSB for the High Idle or is it just an option available on their programmer? I dont want them to tell me that there is no way that they can activate High Idle.

Are there any other TSBs that I should ask them to perform?
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post #2 of 43 (permalink) Old 08-05-2007, 11:20 PM
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I cant help you but good luck i have heard they are having some problems w/these dpf's and the computer. I wouldnt think unles syou put some wrong oil and fuel in there itd be 100% full. Even w/lsd shouldnt be 100%. If it is good luck most dealers dont have the machine to clean them manually(over 10k dolalr machine and the stuff inside is haz mat material), but doubt they have a exchange programe there yet

1996 Gmc k2500 4x4 6.5 turbo diesel, with mods Blew the head gasket, put all new heads, valves, injecotrs gaskets etc on the truck only to get it together and find out it had no oil pressure, and sounded horrible (pry a spun bearing). SOLD
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post #3 of 43 (permalink) Old 08-05-2007, 11:30 PM
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The DPFs fill up due to COLD EGTs, not cold engines, ideling or the wrong fuel/oil. While all of those nasties will make it fill up FASTER (because they harm the wash coatings on the ceramic core - preventing it from catalizing like it should).

If you are buying a diesel TRUCK for play, and not for WORK, gas would be a FAR better choice.

For 2007 and beyond, DIESEL TRUCKs do NOT make good "grocery getters".

'93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK
I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal).

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post #4 of 43 (permalink) Old 08-06-2007, 12:00 AM
 
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Quote:
Originally Posted by John_G
If you are buying a diesel TRUCK for play, and not for WORK, gas would be a FAR better choice.

For 2007 and beyond, DIESEL TRUCKs do NOT make good "grocery getters".
Totally disagree with this statement. These trucks were not designed for just work. This is my second cummins and doesn't matter what you do, there should
not be any problems.

If these trucks were designed just for work, that wouldn't have all the extra options. There are plenty of these trucks that were built and now being sold for people just like me who don't intend to haul, just have a pure joy for the cummins-

BigD
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post #5 of 43 (permalink) Old 08-06-2007, 12:13 AM
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No disrespect BigD, but they are NOT designed to be doddled around town.

Will they do it? Yes.

Will you have more problems with the aftertreatment systems? Yes.

What marketing adds to the options list has NOTHING to do with the design of the emissions and aftertreatment systems. That (marketing/sales) stuff is designed to improve PROFIT of the manufacturer, not make it work (better).

Ford, GM, and Dodge are in the business to SELL vehicles. To do that, they must offer the potential buyers what they want (lately Ford has badly missed the boat on this - THANKS JAQUES !) - OPTIONS.

The engineers are tasked to make the vehicles offered meet emissions, not to make them sell.

Conflict of use.

'93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK
I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal).

Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote - Benjamin Franklin

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post #6 of 43 (permalink) Old 08-06-2007, 12:39 AM
 
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No disrespect taken John! I'm a member of several boards and moderate a few also. The new 6.7 intrigues me and as a new owner, I'm looking for as much info as I can get.

On to the discussion. I'm wondering what you base your opinion on with the assumption that the 6.7 with new emissions is only for work.

BigD
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post #7 of 43 (permalink) Old 08-06-2007, 12:59 AM
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You cannot get the soot in the DPF to convert to ash (like charcoal burns down to ash in your Weber) with low EGTs.

Light loads, extended idle time in cold weather, and low speed operation below 45 MPH do not generate enough exhaust heat to cause the reaction. Therefore you plug the DPF very prematurely.

All these operating charecteristics are those of grocery getters, and not of WORK vehicles. Even BIG fleets have noticed that with 2007 emissions diesels, for P/U and delivery, they may be better served overall, with a GAS powerplant.

'93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK
I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal).

Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote - Benjamin Franklin

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post #8 of 43 (permalink) Old 08-06-2007, 01:20 AM
 
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In this case...take it out and run it hard. Don't baby it.
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post #9 of 43 (permalink) Old 08-06-2007, 01:51 AM
 
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Well the reason that I ask, for arguments sake, is that all new diesel (I believe) engines have the new emission system. This would include passenger cars, which were never designed for work. Hell, look at Mercedes. They have the BTS same as Cummins. These are clearly grocery store drivers/mall.

It is my opinion that there will have to be a few changes made (although I run mine hard when possible) to accommodate the in town drivers. It's all part of the learning curve with this new emissions system.

Coming from a 12V'er I love my new 6.7. I don't need to roll coals and have all the sound associated with the past. This engine stock is something else! I test drove the 5.9 (new) and then the 6.7. The 6.7 is worlds apart. Performance after market modules have already been developed and will only get better! I've even thought about putting a stcker on the back of my window with the name "Candy ***" because I will never pull with this truck!

I have plenty of faith that I'll be able to drive to and from work everyday and light it up when I won't to without much worry for the dpf.

BigD
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post #10 of 43 (permalink) Old 08-06-2007, 02:18 AM
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EGTs have nothing to do with a car vs a truck.

You can have HOT EGTs on a truck, and COLD on a car, that is not the point.

Take a VW TDI: 90 HP and about 3500#, contrast that to your truck at 6,000# but 350 HP. Which is working harder under the same acceleration? The VW, therefore it will have the EGT it needs, you will not (under light to moderate loads).

All things are relative. But I stand by what I posted last year, these new DPF equipped TRUCKS are not for family transportation. It *may* be ok for a while, but eventually it will catch up.

'93 F-250 HD, 7.3L IDI, 5spd - FARM TRUCK
I Support: Trailer brakes an every axle over the towing vehicle's GVW; CDLs for RVers; Safety inspections for ALL vehicles and 6 axle trucks (97K GVW proposal).

Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote - Benjamin Franklin

I vote for LIBERTY!
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