Well my trucks right back at it sputters while drivin then dies out i put a new filter on it and then my dealership put a new ECM on it cuz they were sure that was it??? WRONG!!!! I don't really know wat else i should do they said it had a low fuel rail pressure code on this time but they have no idea wat the hell to do, and quite honestly i dont think they can figure it out anyway! Any help is good help cuz im tired of havin it drive like and not havin it when its at the dealership!


2006 Chevrolet 2500HD LBZ Duramax/w 6spd Allison
66000 miles (bone stock for now and might stay that way if it doesnt get fixed!)

 

Has the cp3 been checked out? Also u could try and replace the fprv with one from PPE

 

I havent checked either of those yet but would that make the truck die out like that, the valve is a possibility, however the dealer is startin to lean towards it being a loose injector wire in one of the two harnesses atop the engine? Hell i dont know we're lookin for a ghost! Let me know though.

 

any codes?

 

um ya it had a low fuel rail pressure code and one other one too but they didnt tell me what it was

 

i you take it to an autopart store they can check codes for you there too.

but the low fuel rail pressure code, p0093? maybee

 

maybe...elaborate please im walkin in the dark here

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btw fprv is fuel pressure relase valve correct?

 

you can bottle test it, i think lbz's have a hose you can pull on the back of the driver side fuel rail ad replace it with a really long hose with a bottle on the end of it

the hose should be under the glow plug control relay, its very short and makes a U to a steel line that goes back to the tank.

what you so is use a long hose so that you can stick the other end of the hose with the bottle attach to it somewhere under the hood while you go drive the **** out of it. if theres fuel in there the fprv is leaking (fuel pressure relief valve)

But usually thats a problem with the lly motors

does it have a rough idle or lack or power when your driving? whats goin on with it exactly

 

so ill be drivin it like normal and it will sputter the rpms drop to 0 and then immediately come back however it will go in fits like up to 10-15 times in a minute and then its good but once in a whil itll die out too The first time it ever died out it wouldnt start up right away i sat for about 5 minutes then it started. After that i took it in and the dealer put in a new ECM and a new fuel filter that was last week tuesday it ran fine until taday when it did it all over again

 

stilll under warrenty right?