TheDieselPage.com Forums  
2014 - TDP's 19th Year
What's New: | Feature Articles: | Product Reviews: | Member's Area: | Subscribe:
Duramax 6600 Diesel Page | Advertiser's Section | Classified Ads | Photo Album | Diesel Books, GM Licensed T-shirts


Go Back   TheDieselPage.com Forums > Chevrolet & GMC 2500HD/3500 Light Trucks > Duramax 6600
Register FAQ Members List Photo Album Mark Forums Read

Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ & LMM engine specific topics.

Reply
 
Thread Tools Display Modes
  #81  
Old 08-06-2012, 01:40 PM
Mark Rinker's Avatar
Mark Rinker Mark Rinker is offline
Enthusiast
 
Join Date: Jun 2003
Posts: 5,772
Default

Any chance of making this programming available via the Diablosport/Predator handheld as a custom tune?

If no - is there any way to reflash the stock ECM with this fix and a mild tow/economy bump.

Reason for asking is this truck is probably going down the road this fall, as part my my relocation to Seattle. I'd like to sell it with a solution for the P00087, that doesn't require or assume much knowledge of the end buyer - i.e. whomever gets it at the auto auction after its traded in.
__________________
2005 GMC Yukon Denali 6.0L gas (hey its paid for)
  • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW
  • Total GM diesel miles to date : ~950K
Reply With Quote
  #82  
Old 08-06-2012, 01:53 PM
Kennedy Kennedy is offline
Long Distance Crew Chief for BMDMAX
 
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,167
Default

There's no way that I'd be working with any other "generic" hardware. This will be something that I wil incorporate into my Kennedy Custom programming. The next issue though is will the bump in power make the code set again. Still a lot of questions, but it looks like we're making progress...
__________________
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.

Custom tuning in house using EFI Live tuning software!
Reply With Quote
  #83  
Old 08-08-2012, 02:30 PM
Kennedy Kennedy is offline
Long Distance Crew Chief for BMDMAX
 
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,167
Default

Test subject stopped in today and I verified which tune it was that worked. Planning to do lift pumps soon, possibly next week. I also have him cleaning fuel cooler. It looks pretty grungy at a glance.
__________________
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.

Custom tuning in house using EFI Live tuning software!
Reply With Quote
  #84  
Old 09-25-2012, 12:14 PM
Kennedy Kennedy is offline
Long Distance Crew Chief for BMDMAX
 
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,167
Default Update

I recently did a performance tune for LMM and added the same correction. Customer made trip and tells me that he easily would have tripped 12 or more times on this type of run. He thought that he was free and clear, but managed to trip it once just out of the blue. Considering the added demand/load of the tuning this isn't bad. We are taking a wait and see approach and will consider more tweaking if the issue persists.
__________________
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.

Custom tuning in house using EFI Live tuning software!
Reply With Quote
  #85  
Old 09-28-2012, 05:09 AM
Mark Rinker's Avatar
Mark Rinker Mark Rinker is offline
Enthusiast
 
Join Date: Jun 2003
Posts: 5,772
Default

Unless that guy is hauling in the southwest, my guess is he will have more issues next summer when higher temps return. Ambient temps which contribute to high fuel temps are a big part of this issue.

I am finishing up a 3000 mile trip today, with a heavy wide boat and through terrain that would have tripped the P00087 many times last summer. So far only two codes set, and that was running hard uphill with a low tank of fuel. The only difference? About 30-40 degrees less ambient fall temps.

This issue is best solved via programming tweaks, but it is clearly a combination of all that has been discussed, including:
  • High mile or high fuel volume injectors (i.e. always towing)
  • Heavy loaded towing, usually compounded by hills
  • High fuel temps, caused by excessive return rates, low fuel level in tank, poor fuel cooling or flow, etc.
If I'm still hauling boats next summer I will buy your finished product, if it can be warranted to solve yproblem. However, my goal is to be in Seattle driving a 2012 ZL1 Camaro by then, although I may be driving my daughters Jetta if I can't find anyone to buy my biz...we'll see which happens first!


Mark @ www.MREBoatTransport.com
__________________
2005 GMC Yukon Denali 6.0L gas (hey its paid for)
  • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW
  • Total GM diesel miles to date : ~950K

Last edited by Mark Rinker; 09-28-2012 at 05:26 AM.
Reply With Quote
  #86  
Old 09-28-2012, 07:18 AM
Kennedy Kennedy is offline
Long Distance Crew Chief for BMDMAX
 
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,167
Default

This trip was made during conditions that would have normally caused the limp numerous times. I'm a bit late in reporting.

Customer is well aware that he's likely delaying the inevitable and that there are NO GUARANTEES and I make this clear in my Tech Tip, but for now if it helps minimize the instances plus increasing the capabilities if in limp mode it's a win-win for most.

Again no guarantees, BUT a willingness to adjust and tweak to work around the issue as needed.
__________________
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
Superflow Lie Detector in house
2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
2005 Chev K3500SRW D/A CC Long LT(SOLD)
2007 Chev K2500 Classic EC Short LT
2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.

Custom tuning in house using EFI Live tuning software!
Reply With Quote
  #87  
Old 09-28-2012, 11:12 AM
dually2002 dually2002 is offline
Enthusiast
 
Join Date: Oct 2007
Posts: 65
Default

I have been curious if diesel fuel is formulated for use in a high pressure application like the Dmax. Most of the fuel the pump picks up is by-passed back to the tank so fuel is constantly recirculating and besides picking up heat from the engine it also adds heat from being under pressure. I wonder if a fan located to blow on the fuel heat exchanger would help. Also the fuel constantly be re-circulated and the ultra low sulphur content of the fuel might be reducing lubricating properties of the fuel to the point that it harms the injectors.
Reply With Quote
  #88  
Old 11-10-2012, 09:22 AM
getinrad getinrad is offline
Newbie
 
Join Date: Nov 2012
Location: Ridgway, CO
Posts: 1
Default p0087 Issue

I've been a victim of this same issue now for a month. We replaced all of the stock fuel lines, installed an airdog and completely bypassed the stock filter housing, and I still get this same message when I lay on the throttle or when towing heavy loads. I have 2007.5. Could it be the FPRV?
Reply With Quote
  #89  
Old 11-10-2012, 10:52 AM
Mark Rinker's Avatar
Mark Rinker Mark Rinker is offline
Enthusiast
 
Join Date: Jun 2003
Posts: 5,772
Default

How many miles on your injectors? What other filtration are you using? Lift pump?

Potentially anything that could cause the system to not deliver actual fuel rail pressures as commanded by the ECM can be to blame. I have personally never seen unloaded/high acceleration set this code.

In my cases its always towing heavy in the hills with heat as an exaggerating factor - i.e. HOT fuel.
__________________
2005 GMC Yukon Denali 6.0L gas (hey its paid for)
  • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW
  • Total GM diesel miles to date : ~950K
Reply With Quote
  #90  
Old 01-22-2013, 08:31 PM
Mark Rinker's Avatar
Mark Rinker Mark Rinker is offline
Enthusiast
 
Join Date: Jun 2003
Posts: 5,772
Default

Update: Interesting observation today while running same route from Grasonville, MD through mountains of MD, WV, PA...the route that tripped the P00087 countless times in July with a SeaRay 310 (12000#) in tow at 85F outside temps.

Today was a Chaparral 350l, tipping the scales closer to 15K#, but the outside temps ranged from 14f to an icy 9f.

You guessed it...no matter how hard I drove the truck (extended 4th gear, 3000rpm charges up 8% grades to maintain 55mph, passing semis with their flashers on one after another) I never set the code all day.

So...it may be a worn injector situation that causes the high return rates, that heats up fuel, that contributes to low rail pressures...BUT...the biggest cause is

HOT FUEL. (period)

Somebody make a bigger undercarriage mounted fuel cooler with fan assist and I think you'd narrow the window considerably, if not eliminate it entirely, throughout the lifespan of the injectors. I have 155K on my originals and they are running as strong as day one. Not touching a thing, certainly not for a pesky code where I can push a button and 'fix' the programming error. Its certainly not worth installing new injectors to fix, at least not in my case which is towing heavy on hot days in the hills.

I know...how about we programmatically correct this bug in the ECM?
__________________
2005 GMC Yukon Denali 6.0L gas (hey its paid for)
  • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW
  • Total GM diesel miles to date : ~950K

Last edited by Mark Rinker; 01-22-2013 at 08:56 PM.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 08:07 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 1996-2014 by TheDieselPage.com - All Rights Reserved