Major misfire problems.

Switch c2-27 and c2-29 at the PCM. That should get it running ok

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.

Well dang.

What is running pressure again?

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

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.

Quote:

---

Originally Posted by crzy8mnky

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

I missed the 2 & 3 being wrong. Hopefully that helps.

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.

That wiring is correct.

Jeff