06 lly fuel rail pressure sensor problems - Chevy and GMC Duramax Diesel Forum
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Old 01-17-2010, 01:58 PM   eBay Motors  #1 (permalink)
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Angry 06 lly fuel rail pressure sensor problems

I have a 06 lly duramax with 6 gun banks tuner with pda read out, 5 inch dimond eye exgaust, 6 inch lift, 35 by 12.50 tires and banks cold air intake. My dad started my truck and it sounded different. I wasnt there so i dont know exactly what was different. The check engine light came on and it said low fuel rail pressure and was in limp mode. It wouldnt go over 2000 rpm and got worse. It might of happened before but i didnt know because i didnt have the pda to check it. He shut it off and cleared the code and no more problem what could it be any ideas?

Last edited by rayrenner4; 01-17-2010 at 02:03 PM. Reason: for got to add some stuff
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Old 03-09-2011, 05:52 PM   eBay Motors  #2 (permalink)
 
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All it is that you have a low fuel pressure reading in your fuel rail. All you have to do is put a shim kit in it, which the kit cost like 12 bucks... If that doesnt solve the problem, then you probebly have to buy a lift pump
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Old 03-09-2011, 06:08 PM   eBay Motors  #3 (permalink)
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how old is the fuel filter? worth changing if it has been some time since the change.
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Old 03-20-2011, 08:14 PM   eBay Motors  #4 (permalink)
 
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I am having the same problem but with a stock 07 LBZ. It likes to do this when i tow and decide to pull a hill in 5th. even with a brand new filter it will do it like clock work. Did the shim kit work?
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Old 06-17-2011, 06:40 PM   eBay Motors  #5 (permalink)
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You can do the shim kit, but it's better/more reliable IMHO to just install the PPE race FPRV and a lift pump instead.
If you are losing rail pressure from leakage these two will fix your issue.

I'd also suggest something like an Edge CTS where you can monitor demand vs actual fuel rail pressure to see if that is your issue.
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Old 06-17-2011, 06:52 PM   eBay Motors  #6 (permalink)
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STOP IT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!

THE SHIM KIT IS NOT A CURE ALL!!!!!!!!!!!!!!!!!!!!!

I'VE READ WAYYYYYYYYYYY TOOOOOOO MANY post saying shim it. and then it doesnt fix it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!

stop stop stop

I'm STILL on my stock, unmolested FPRV


STOP IT NOW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


:rockin











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Old 06-17-2011, 07:00 PM   eBay Motors  #7 (permalink)
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go the route im going and get a lift pump. when i cranck my edge up to hot it drains the fuel rail. i dont get any codes but u can feel it startting to studder and carry on.
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Old 06-17-2011, 07:02 PM   eBay Motors  #8 (permalink)
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here's what cured my 0087s

Dealer fixed my LBZ 0087 - Duramax Diesels Forum

and the fuel line fix
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Old 09-07-2011, 05:21 PM   eBay Motors  #9 (permalink)
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i have got a buddy with an 06 dmax thats doing the same thing....what was the problem and how did you fix it....we just ordered a new fuel pressure regulator and we just put on a airdog 150 system on it which helped for a while but the truck now still wont go above 1900rpm help please
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Old 06-14-2013, 07:46 AM   eBay Motors  #10 (permalink)
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I have a customer that has the same problem. he is getting a p1093 code. he put in a new regulator on the rail first. then I put shims in the new regulator. Then I put an air dog on it and it still wont pull a heavy load especially when going over a steep grade with out pulling that code. I am thinking of putting in the race valve.
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