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fprv

  1. losing prime problem

    04.5-05 LLY Duramax Powertrain
    I've been losing prime below a quarter of a tank. So I rebuilt the filter head and it was all fine. I also installed a lift pump and put in a new fuel filter. The problem continues to happen, but only below a quarter of a tank. I can get it to run if i reprime the system and the low fuel light...
  2. fuel pressure regulator

    Maintenance
    where is the fuel pressure regulator located at and how much trouble is it to change? is there any thing special you have to do after you change it? have 04 3500 6.6 turbo thanks john
  3. FML fuel shim kit

    911 Problems Forum
    So I couldn't unscrew the FPRV for the life of me and its basically rounded now. Amidst the chaos I took a pretty nice chunk out of my thumb, lost a bolt in the engine somewhere, as well as my phone (which was found about 30 mins later), truck has a few dents in it now, and i tore apart the...
  4. lly fprv replacment

    How To's, DIY and Write ups
    hey guys, i just got done replacing a fprv in one of my dads trucks. i made this diy for the heck of it. its my first one, so let me know wat you guys think.
  5. Surging

    911 Problems Forum
    What would cause the truck to lightly lope or surge when idling? Its hardly noticealbe but definetely there. Truck is all stock except a 4" exhaust system- no programmers or tunes.
  6. fuel pressure sensor

    911 Problems Forum
    getting discouraged i am trying to install power puck supposed to be easy??? it plugs into the map sensor and fuel pressure regulator sensor?? i found map sensor can't find fuel pressure sensor :eek: gm says under ac compressor diablo says under intercooler tube please help and pics would be...
  7. well old faithful is acting up again.

    911 Problems Forum
    Well this is whats happing now anybody have a EFI LIVE tune well of course its trhe best heres the problem you know when you DON'T have a lift pump and your foots threw the floor board and on stage 5 and the thing cuts out cause its running out of fuel....and i'm sure theres alot of you saying...
  8. surging idle

    911 Problems Forum
    so i have noticed lately that when the truck is warm and idles down the rpms surge about 50 or so rpms so the gauge says. no egine lights are on or anything like that. also i have noticed my gas mileage decreasing and im driving the truck like i always do. im pretty new to the diesel world but...
  9. 03 3500 no start

    911 Problems Forum
    hey guys here's what i got 03 3500 duramax dually replaced the fuel pressure regulator replaced the fuel pressure sensor new rubber fuel lines from the filter to the fuel rail new bleeder screw. new fuel filter probelm started in feb. i and then proceeded to replace the parts above. dealership...
  10. Serious FPR problems. Please help.

    How To's, DIY and Write ups
    Hey, My name is Brandon. I drive an 04 sierra 2500 with the LLY engine. I'm currently in the process of trying to replace my FPR. I've got the top side of my engine torn apart as mentioned by other threads. I cannot get my torx bit in to loosen off the FPR so I am attempting to remove the pipe...
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