Helping a friend with p0087

[wdino73]

I had a friend call me, he has an 06 LBZ with over 100,000 miles so no warranty, He's getting the p0089, I don't know if he's anymore codes or not, I don't think he is, He replaced the CP3, the fpr an put on a lift pump, an still getting the code,
Is there anything else I can tell him to look for, just thought I would ask I don't really know alot about the newer duramax's, but I would like to help him out.

Thanks

 

[wdino73]

Sorry guys it's not the p0089, it's the p0087, sorry,

 

[Kat]

Edited the title for you :thumb:

 

[Kat]

Have him do a bottle test.

 

[wdino73]

okiee dokiee

 

[x MadMAX DIESEL]

Shim it. I have the nut at my house I can let you borrow. I think the washers are 4mm flat washers too

 

[JD Dave]

Shim it. I have the nut at my house I can let you borrow. I think the washers are 4mm flat washers too

That's what I had to do to mine. Once you pop it the first time it seems to get easier.

 

[TIM Z]

Following along as im still ahving these issues

 

[wdino73]

Edited the title for you :thumb:

Thanks Kat, your the best.

 

[wdino73]

We're going to shim it tomorrow, I've noticed it's happening more so on higher mileage engines, I was wondering beings the problem I've just went through, if the orifices could have so build up on them, On a lb7 the orifices are after the fprv, on the lbz they are before, HMMM, just thinking out loud. I'll keep you guys posted. thanks for your responses

 

[x MadMAX DIESEL]

We're going to shim it tomorrow, I've noticed it's happening more so on higher mileage engines, I was wondering beings the problem I've just went through, if the orifices could have so build up on them, On a lb7 the orifices are after the fprv, on the lbz they are before, HMMM, just thinking out loud. I'll keep you guys posted. thanks for your responses

Im betting its just asimple frpv that needs some TLC, second guess would be a cp3, buts thats nowhere near as likely as the frpv

 

[x MadMAX DIESEL]

If the rails haven't been taken aprt and heres running a low micron filter I doubt the fittings cvoule be pluged up..

Is this code setting at WOT or just cruising like a grandpa

 

[DetailsUnlimited]

Mine only happened with a high HP tune. The shim was in and still thru the code. The shim(spring) IMO only last so long before it gets weak. Put a PPE race valve in it and be done.

 

[wdino73]

If the rails haven't been taken aprt and heres running a low micron filter I doubt the fittings cvoule be pluged up..

Is this code setting at WOT or just cruising like a grandpa

Only happenes when towing,

 

[wdino73]

Well after doing some research an logging, we found that the fuel temp was getting very high, so we install a new fuel cooler, an so far no problems, an its' been bad hot were we live......

 

[quackyhunter]

looking for help I have been hit now with the P0087 code " low fuel pressure" it hit twice while pulling a slight grade, once with and empty tank and once with a 3/4 tank. The other time it hit was when i was really putting my foot into. I have a stock 2005. I did just replaced the FPR for an idle surge. I also blow a lot of black smoke when i put my foot into as well dont know if this is another symptom.