4 Codes-including an injector question

[hmgessner]

So, as a female, I would like to educate myself about the codes my 2001 is showing before I go to a mechanic. Because based on what I have found so far, a mechanic is in my future.
Four codes show up--
P2563 (Turbo Charger Boost Control Position Sensor A-Circuit Performance)--So I need the circuits checked, then the sensor and then the turbo?
P003A (Vane in the Turbo is stuck)---So I need to rebuild the turbo?
P0673 (Cylinder #3 GlowPlug Faulty) ---So I need to replace GlowPlug #3?
P0087 (Low Fuel Pressure, Injectors) Should be between +/- 4, so based on
injector Balance numbers of
1= 1.8, 2=-7.0, 3=2.9, 4=0.6, 5=-.07, 6=0.8, 7=-1.6, 8=3.6, I should replace injector #2?

What should all this cost? Normal parts cost and normal number of hours to replace/fix? Or trade the pickup to someone that enjoys mechanical work?
Thanks.

 

[zakkb787]

With it being an lb7, you do not have turbo vanes. Not sure what the second code is for. As far as the injectors. You are much better off doing them all at once because it's labor intensive to open up the valve covers and you run the risk of contamination when you rack open lines. You have multiple injectors borderline out of spec so the others aren't far behind. Maybe someone else will chime in on the other codes or better info

 

[ZeroGravity58]

As a previous lb7 owner do not waste your time doing one injector. At least do the one side at the least. Your low fuel pressure could very well be one of the injectors are dribbling fuel. Can you post more details on the truck like mileage and where are you located? To replace all 8 injectors with gm remans you are looking roughly 3-4 grand. I haven't done a set in awhile so I don't know what the prices of them are but they arnt cheap.

 

[Wikid]

The P0087 happens often in these trucks. I am pretty sure the LB7 still had the fuel pressure relief valve in the drivers rail. Everyone typically replaces them with a shimmed version or the race version to help with this code. As the valve gets weaker over time. I want to say these are like $50 would have to hop over to PPE to see what they charge for a race valve.

I live in central Texas so I dont usally need to keep up on my glow plugs plus i use my block heater when its below 40. I had my tuner disable the glow plug codes. this can be ignored unless you hate looking at the check engine light or live in a really cold climate.

As for injectors I am assuming you checked the balance rates when the motor was all nice and warm. are those numbers in park or in drive? my LBZ had one injector at 5.5 in park but would stay the same in drive didnt give me any issues.

 

[ZeroGravity58]

Lb7 fpr valve is in the junction block in the valley.

 

[zakkb787]

Whatever you do. DO NOT GO CHEAP ON INJECTORS. ONLY USE BOSCH REMANS.

 

[rfletes79]

Where are you located?

 

[hmgessner]

I am in South Dakota, so I do utilize my glow plugs! Pickup has 159K on it. When it was purchased at <100K 3 or 4 of the injectors were replaced. Checked the injectors in Park. After a short drive.

 

[2004LB7]

Defiantly get the engine up to full operating temp before checking balance rates

Also, can you get us the fuel pressure and mm3 at idle too?

 

[rfletes79]

So, as a female, I would like to educate myself about the codes my 2001 is showing before I go to a mechanic. Because based on what I have found so far, a mechanic is in my future.
Four codes show up--
P2563 (Turbo Charger Boost Control Position Sensor A-Circuit Performance)--So I need the circuits checked, then the sensor and then the turbo?
P003A (Vane in the Turbo is stuck)---So I need to rebuild the turbo?
P0673 (Cylinder #3 GlowPlug Faulty) ---So I need to replace GlowPlug #3?
P0087 (Low Fuel Pressure, Injectors) Should be between +/- 4, so based on
injector Balance numbers of
1= 1.8, 2=-7.0, 3=2.9, 4=0.6, 5=-.07, 6=0.8, 7=-1.6, 8=3.6, I should replace injector #2?

What should all this cost? Normal parts cost and normal number of hours to replace/fix? Or trade the pickup to someone that enjoys mechanical work?
Thanks.

So you got a few weird things going on here.......... you say your truck is an 01, so we are assuming you have an LB7, right? just want to confirm. The first 3 codes you list do not jive with an LB7, these codes do not exist for duramax's until LLY and later. You cannot have codes 2563 (LLY and later), 003A (LBZ and later) and 0673 (LLY and later) on an 01 LB7.

Either you have a funky code reader (and you need a new one) or someone else who you had plug into it is already pulling your chain......

get a second opinion from someone else on your present codes.

 

[JoshH]

Are you sure the truck is a 2001? Most LB7 trucks are not able to set individual glow plug codes because in most trucks the glow plugs are operated from a common busbar. I know California emissions trucks are different, but I'm not even sure they are able to detect individual glow plug faults. Also, there are no LB7 engines that utilize a variable geometry turbo that would set a P2563 or P003A code.

Got sidetracked in my response and got tree'd by Rick, but what he says is 100% correct. Unless someone did an engine swap to a later model engine in your 2001 truck, or you are incorrect in what year your truck is, something is going on with the codes you are providing.

 

[zakkb787]

Thought something was funky...

 

[DAVe3283]

The California emissions LB7s can detect individual glow plug faults, but I think they only have one code for when 1 (or more) glow plugs have failed. You then read the PID for "glow plug feedback voltage" to determine how many are bad.

Those codes are reading out like you have a 2005.5+ engine swapped in to the truck. What is the VIN on the plate in the windshield of the truck? What is the VIN that reads out of the OBD-2 port?

Alternatively, just post a photo of the truck and of the engine, and we can tell you what you've got :thumb:

 

[hmgessner]

Double checked-2002. I don't know what LB7 refers to. Sorry.

 

[DAVe3283]

You said you wanted to learn, so I'm going to give you some basics here. This will all relate to your specific issues at the end, so bear with me here.

LB7 refers to the model of the engine. Inside your glove box, there will be a white sticker with a bunch of RPO codes (3 letter codes) in a giant grid. Those are all the options your truck was fitted with. LB7 will be in that list. Alternatively, the 8th digit of your VIN tells what engine your truck had.

• LB7 (1) 2001 - 2004. Fixed turbo.
• LLY (2) 2004.5-2006. Variable turbo.
  
• LBZ (D) 2006 - 2007. Variable turbo.
• LMM (6) 2007.5-2009. Variable turbo.
• LML (8) 2011 - 2016. Variable turbo.
• L5P (Y) 2017+. Electric variable turbo.

It is possible to swap engines between truck years (though it is usually only legal to swap to a newer motor).

• 2001-2007 Classic engines/trucks can be mix & matched.
  • 2003-2007 Classic are basically plug and play.
  • 2001-2002 with 2003-2007 engine is a bit harder, but has been done.
  • This is a popular conversion, since the LB7 is known to go through injectors, and it isn't much more $$ to put a newer engine in than to change the injectors.
• 2007.5 - 2010 can be mix & matched.
• I suspect 2011-present can be mix & matched, but the L5P is so new, no one has tried it.

So when people are saying your codes aren't possible on an LB7, they mean the engine your 2002 shipped with (LB7) doesn't have a variable geometry turbo. Since you are getting variable geometry turbo error codes, that means one of a few things:

1. Your code reader is malfunctioning / doesn't support the Duramax. Try a different / better code reader.
2. Your truck has a LLY or LBZ engine in it. If you bought the truck used, it is possible someone swapped the engine instead of doing injectors.
3. Your engine computer is completely toast, and is reporting nonsense.

That is why I asked for the VIN number on your dashboard (or in the glove box), and the VIN number reported by your ECU. There seems to be a mismatch, and until we know which engine is actually in your truck, we are going to have a hard time helping.

 

[hmgessner]

You said you wanted to learn, so I'm going to give you some basics here. This will all relate to your specific issues at the end, so bear with me here.

LB7 refers to the model of the engine. Inside your glove box, there will be a white sticker with a bunch of RPO codes (3 letter codes) in a giant grid. Those are all the options your truck was fitted with. LB7 will be in that list. Alternatively, the 8th digit of your VIN tells what engine your truck had.

• LB7 (1) 2001 - 2004. Fixed turbo.
• LLY (2) 2004.5-2006. Variable turbo.
  
• LBZ (D) 2006 - 2007. Variable turbo.
• LMM (6) 2007.5-2009. Variable turbo.
• LML (8) 2011 - 2016. Variable turbo.
• L5P (Y) 2017+. Electric variable turbo.

It is possible to swap engines between truck years (though it is usually only legal to swap to a newer motor).

• 2001-2007 Classic engines/trucks can be mix & matched.
  • 2003-2007 Classic are basically plug and play.
  • 2001-2002 with 2003-2007 engine is a bit harder, but has been done.
  • This is a popular conversion, since the LB7 is known to go through injectors, and it isn't much more $$ to put a newer engine in than to change the injectors.
• 2007.5 - 2010 can be mix & matched.
• I suspect 2011-present can be mix & matched, but the L5P is so new, no one has tried it.

So when people are saying your codes aren't possible on an LB7, they mean the engine your 2002 shipped with (LB7) doesn't have a variable geometry turbo. Since you are getting variable geometry turbo error codes, that means one of a few things:

1. Your code reader is malfunctioning / doesn't support the Duramax. Try a different / better code reader.
2. Your truck has a LLY or LBZ engine in it. If you bought the truck used, it is possible someone swapped the engine instead of doing injectors.
3. Your engine computer is completely toast, and is reporting nonsense.

That is why I asked for the VIN number on your dashboard (or in the glove box), and the VIN number reported by your ECU. There seems to be a mismatch, and until we know which engine is actually in your truck, we are going to have a hard time helping.

OK. THANKS! I will have to look all of that up when I get home tonight. Cattle are so much easier!