need help

B

Brandon

New member
Jul 28, 2009
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was directed to this forum and was told this is the best one with the real experts.

before i registered i could read the other forums but now i cant see them while logged in so i assume this is a spam filter of some kind or need a amount of posts etc. so hope posting this is ok here.

my truck is a 01 lb7 bone stock with 135 k and stock i mean the same size tires on it that it came with. only things done have been routine service and i change the fuel filter every 5k with oil service.

and has a problem. ..po093 code after no rpm higher than 2000 pulling a load.

only time it does this is pulling a load but it does not do it every time.

just once in a while.

new fuel filter & new fuel pressure regulator did not correct the issue after a dealer said that was it.

same thing , once in a while wile pulling will do this and throw the code.

i tried a different dealer but after the 130 $ diag they said i had bad injectors but could not tell my why they were bad and then i told them every oil change i have no fuel in the oil ........and my friends shop that does little basic service has a scanner and the balance and return rates were near perfect ( from reading online what they should be ) and then the service guy said the fuel injection pump was bad after he went and talked to someone else after i gave him the info.

i realy cant find anyone in my area that knows d-max so i hope someone can help me save money and repair this without the guessing game and throwing expensive parts at it.

sorry for a long post but hope i gave enough info for my issue.

thanks in advance.
 
wikdlmm

wikdlmm

<-- OWFA
Jun 27, 2008
1,974
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san angelo
my bro 01 did the same thing while towing but it ran great an no codes wiifhout a load! Talked to chad an the dealer an came to the conclusion it was a bad cp3... He changed it an hasn't had any problems since...
 
B

Brandon

New member
Jul 28, 2009
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all were 0.0 to 1.8 in park and neutral

i can go back to his shop tomo and get exact #'s but from searching they realy cant be any better than what we read .
 
Kat

Kat

Wicked Witch of the West
Aug 2, 2006
17,899
13
38
60
Norco, CA
This isn't anything on the site that stops you from seeing the forums either logged in or out.

The only thing limited is 25 post to sell things here.

BTW

:hello: and :welcome5:

Also moving this to hard parts :D
 
B

Brandon

New member
Jul 28, 2009
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wikdlmm said:
my bro 01 did the same thing while towing but it ran great an no codes wiifhout a load! Talked to chad an the dealer an came to the conclusion it was a bad cp3... He changed it an hasn't had any problems since...
Click to expand...

so no code .po093 ?

if it is the pump can't i measure volume or pressure to confirm it is failing ?

another site i posted on said add a lift pump and it will fix this condition also ?

a lift pump is a lot cheaper and a lot less work than a new fuel injection pump
 
ripmf666

ripmf666

Active member
Sep 20, 2006
15,123
14
38
47
Wentzville Mo
Post your vin in the vin check area and we can see what the dealer has done to the truck. and also welcome to the site
 
TrentNell

TrentNell

Finally underway !!!!!
Jul 7, 2008
7,543
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44
slc tuah
the only way injectors could cause the p0093 is if the return rates were really high . my money is with the cp3 being bad , yes a lift pump could possible "band aid" it but it will get worse and will need to be replaced anyway even with the lift pump . as far as ruling out the injectors a " bottle test" needs to be done. Look around there are used CP3 pumps that pop up for 3-400 bucks .

welcome to the site :hello:
 
ripmf666

ripmf666

Active member
Sep 20, 2006
15,123
14
38
47
Wentzville Mo
You need to have someone take tech 2 and look at desired fuel pressure and actual fuel rail presure while driving and getting into it some.Also they can control and ask for full fuel pressure from the cp3 and see if its putting it all out should ask for 23,000 if it drops below 20,000 it will code
 
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B

Brandon

New member
Jul 28, 2009
8
0
0
Kat said:
This isn't anything on the site that stops you from seeing the forums either logged in or out.

The only thing limited is 25 post to sell things here.

BTW

:hello: and :welcome5:

Also moving this to hard parts :D
Click to expand...

thank you and i was confused with the other site that showed year specific forums.

to much searching tonight , glad i was referred here tho , you guys so far have gave me more info that the others.
 
B

Brandon

New member
Jul 28, 2009
8
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0
ripmf666 said:
You need to have someone take tech 2 and look at desired fuel pressure and actual fuel rail presure while driving and getting into it some.Also they can control and ask for full fuel pressure from the cp3 and see if its putting it all out should ask for 23,000 if it drops below 20,000 it will code
Click to expand...

my friends shop has a snap on solus pro , will that do the readings we need to figure this out ?

other than this option it is back to the dealer for another $135 lookie for that info
 
B

Brandon

New member
Jul 28, 2009
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TrentNell;247544 a " bottle test" needs to be done.
Click to expand...

thank you for the advice..... but can you either link me to a thread on this awesome forum that explains a " bottle test " or tell me how i can do it ?
 
B

Brandon

New member
Jul 28, 2009
8
0
0
you guys are simply outstanding .

i am so glad i was referred here .

there are a lot of duramax sites it seems but you guys actually help a new guy with a problem rather than talk down to them like some others .

i will let you know the outcome after my visit to the shop with the snap on .

while i was online with you guys i called him and he said it has freez frame date when the code was stored and has the parameters of why it was set.

i only hope it is not the pump but either way i know i found a site that will help people like me , ... maybe i should referr the dealer guy here .. LOL

thank you
 
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