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Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

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My beast is now giving me a lope when I come to a stop. The light gray smoke at the lights after a 50 mile drive and requires a hard acceleration to clear. Still showing no codes. The dealer double cheked the balance rates again, ... JOIN NOW TO REMOVE TRACER

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  #1  
Old 06-18-2011, 10:54 PM
The Don's Avatar
Diesel Fan
Status: always lost

   

Default CP3 failure?

My beast is now giving me a lope when I come to a stop. The light gray smoke at the lights after a 50 mile drive and requires a hard acceleration to clear. Still showing no codes. The dealer double cheked the balance rates again, and fuel pressure fluctuates between 21K and 23K PSI. Dealer said pressure is in the normal opperating range. Hmmmm?? Any thoughts?

---AutoMerged DoublePost---

Ok over 30 people have read the post and nobody had any thoughts. This site doesn't appear to be as helpful as was suggested to me.

The Don's Sig:2001 2500HD ccsb silverado LB7 duramax with allison.

Last edited by The Don; 06-18-2011 at 10:54 PM.. Reason: Automerged Doublepost
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  #2  
Old 06-19-2011, 07:41 AM
BriteWhiteRam's Avatar
Diesel Bomber
Status: Homey da clown don't play dat

   

Default

still sounds like bad injectors to me

Find another dealer, injectors max tolerance is +/-4 in park and +/-6 in gear, if they are out of that spec then they are damaged, on my LBZ they rarely ever go more than +/-2 in park

BriteWhiteRam's Sig:2006 Chevrolet Silverado LT 4x4 Crew, LBZ/ALLISON, PPE airbox mod, EGR blocker, EFI Live Tuned by me & Duramaxtuner
TOTALED:2005 Dodge Ram 3500 Laramie 4x4 quadcab, Cummins/modded 48re, edge/juice/attitude
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  #3  
Old 06-20-2011, 04:32 AM
2500HeavyDuty's Avatar
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Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
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I have some tech articles that describe and help diagnose a bad cp3 posted up somewhere on this site, it has been moved fro, its original so you will have to search through the multiple threads I have made.

Basically if there is a flucuation that's real bad it could be theredulator on the back of the cp3. But that's not said in stone. If i had a working computer I would be more able to help you out and direct you to the correct tech post.

2500HeavyDuty's Sig:01' Dmax Ec/Lb: EFI Live tuned by me, Suncoast stage IV, Banks Intake w/ super scoop, 5" exhaust to 6" Stack, Ported intake Horn, Hybrid FPR, Coated CAC pipes, AirDog 150, Gauges, 35's Mounted on H2's lowered. and a Few more mods.
gt42 up the sleeve

06' Jetta TDI: Bone stock 42MPG @ 80mph.

IT LIVES!!!!


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  #4  
Old 06-20-2011, 04:34 AM
2500HeavyDuty's Avatar
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Status: Hot pockets?!?! THEY WERE LEAN POCKETS!!

   
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You can click on the link here and it will show you all my threads, the majority are tech.

http://www.dieselbombers.com/search....&starteronly=1
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  #5  
Old 06-21-2011, 11:48 PM
The Don's Avatar
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Status: always lost

   

Default

I do appreciate the link some of your posts I wasn't able to find without it.
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