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Thread: Major misfire problems.

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  1. #1
    Right now I have C1-43 for injector 7 and C1-44 for injector 4.

    Edit: I think you mean for the coils, since the solid colors control the odd banks and the stripes control the even banks. The labels are wrong, but the colors match the diagrams that I have.
    Last edited by crzy8mnky; 07-01-2014 at 04:43 PM.

  2. #2
    Join Date
    Jan 2014
    Location
    Las Cruces NM
    Posts
    209
    Switch c2-27 and c2-29 at the PCM. That should get it running ok
    97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
    TURBO IN THE WORKS

  3. #3
    I checked the pin outs and they are correct to the other 5.3 wiring harness. The labels are wrong in the file, but the wire colors are correct, and that's what I went by when putting in my coil harness. I had just removed both coil pack harnesses from the wiring harness that came with the truck. It's not a vacuum leak either, I put my hand over the intake and it suffocated and help pressure.

  4. #4
    Join Date
    Jan 2014
    Location
    Las Cruces NM
    Posts
    209
    Well dang.
    97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
    TURBO IN THE WORKS

  5. #5
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
    Posts
    3,581
    What is running pressure again?
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
    2002 Silverado - 427Lsx w/ Twin gt4202s
    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

  6. #6
    Right around 50 PSI. L59 are supposed to have 48 to 54 PSI.

  7. #7
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
    Posts
    3,581
    What is a l59?

    My jeep base is 50 and i had to scale back the injectors. Its a difference of 5lb worth of flow from typical base of 58.

    Made a huge difference in how it idled and ran.
    Since all injector data is based off of everything not just one thing.
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
    2002 Silverado - 427Lsx w/ Twin gt4202s
    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

  8. #8
    Join Date
    May 2007
    Location
    Oak Forest, Illinois
    Posts
    276
    Quote Originally Posted by crzy8mnky View Post
    Right now I have C1-43 for injector 7 and C1-44 for injector 4.

    Edit: I think you mean for the coils, since the solid colors control the odd banks and the stripes control the even banks. The labels are wrong, but the colors match the diagrams that I have.
    I somehow had two different versions of that. One on my home laptop and one on my work laptop. I have since deleted the other version. This one "should" be correct.

    11. You will be adding:
    a Purple wire to-------------------C2-26 for Coil #1 Control
    a Dk.Grn/Wht wire to------------C2-29 for Coil #4 Control
    a Lt.Blu/Wht wire to--------------C2-28 for Coil #6 Control
    a Red wire to----------------------C2-27 for Coil #7 Control
    a Purple/Wht wire to------------C2-66 for Coil #8 control
    a Lt.Blu wire to--------------------C2-69 for Coil #3 control
    a Dk.Grn wire to------------------C2-68 for Coil #5 control
    a Red/Wht wire to---------------C2-67 for Coil #2 control
    a Brown wire to C2-60 for Bank #1 Coils-Low Reference
    a Brn/Wht wire to C2-61 for Bank #2 Coils-Low Reference
    98 GMC RCSB 2wd, 100% internally stock 305, w/twin T-3 junkyard turbos,Ramjet intake w/42lb inj,12200411 PCM. 4675lbs w/me in it. Best time in 5 passes 13.01@110

  9. #9
    Join Date
    Jan 2014
    Location
    Las Cruces NM
    Posts
    209
    I missed the 2 & 3 being wrong. Hopefully that helps.
    97 RCSB . 2WD . 5.3 . 4l60E . E-FANS . PNP 706s . TSP 228R . 3600 STALL . HD2 . VETTE SERVO . 3.73s . 2" DROP
    TURBO IN THE WORKS

  10. #10
    I have:
    C2-26 Purple, coil 1
    C2-27 Red, coil 7
    C2-28 Lt Blue, coil 6
    C2-29 Dk green/ White, coil 4
    C2-66 Purple/ White, coil 8
    C2-67 Red/ White, coil 2
    C2-68 Dark Green, coil 5
    C2-69 Lt blue, coil 3

    And the L59 is the flex fuel version of the LM7. Larger injectors and lower fuel rail pressure.

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