Coil pack connector pin out

[Hart_Rod]

I've got a misfire on the right side that seems to be affecting all cylinders. I think it is a wiring problem....I know it's not the injectors, plugs, coil packs or O2 sensors... Does anyone have a pin out? TIA

[softballnrd27]

I got this from lt1swap.com, not sure if it will help you.

[dec010974]

Hey hart rod. Make sure that the pins that are connected to the pcm are in the right location. What I mean is when #2 cylinder fires, #8 cylinder has the signal. On my first lsx swap, the firing order from the coil packs was switched. Driver side coils were switched up with the passenger coils on the pcm side. Good luck. I'll check in with you later. Clark.

[Hart_Rod]

Originally Posted by softballnrd27

I got this from lt1swap.com, not sure if it will help you.

Thanks! I'll check it out this evening.

Originally Posted by dec010974

Hey hart rod. Make sure that the pins that are connected to the pcm are in the right location. What I mean is when #2 cylinder fires, #8 cylinder has the signal. On my first lsx swap, the firing order from the coil packs was switched. Driver side coils were switched up with the passenger coils on the pcm side. Good luck. I'll check in with you later. Clark.

Thanks Clark. Who built your harness? I think everything is all on the right side, because the left side seems to be firing OK, and the fuel trims are pretty close. I need to give Speartech a call and see if he has any suggestions.

[softballnrd27]

that is from a 99-02 harness I forgot to mention. I read your other thread and saw that you were using a newer motor so not too sure if it is different.

[softballnrd27]

Here is some info on the newer harnesses:
http://lt1swap.com/2010camaro_ecm_pinouts.htm

[softballnrd27]

hope that helps

[dec010974]

well hart rod, I used two cut up engine harnesses to make one harness. the pins and connectors that were missing, I bought, connected them, and made it work. I used the harness information from LT1swap.com. he also programmed my pcm. word of advice, get the harness and pcm from the same vendor or source. when I wired my harness, I checked every pcm pin to its right connector. I also removed all the stuff/wires lt1swap said to remove. its not that hard. you gotta have a system. my notes are very detailed and I emailed Brendan when ever I had question. trust me, I killed two harness b4 I got this one right. u have my number. call me if you get lost. if need be, send me a harness, and ill wire it for you. ill use the info from lt1swap. just pay for your supplies and shipping. be warned, i have not checked the odb2 connector for codes. I have been driving around the neighbor hood. since I have an aftermarket cam, head port work, springs, stall converter, it will need a final tune from am reputable tuner. but at least I can get the groceries. clark.

[Hart_Rod]

Originally Posted by softballnrd27

hope that helps

Thanks!

Originally Posted by dec010974

well hart rod, I used two cut up engine harnesses to make one harness. the pins and connectors that were missing, I bought, connected them, and made it work. I used the harness information from LT1swap.com. he also programmed my pcm. word of advice, get the harness and pcm from the same vendor or source. when I wired my harness, I checked every pcm pin to its right connector. I also removed all the stuff/wires lt1swap said to remove. its not that hard. you gotta have a system. my notes are very detailed and I emailed Brendan when ever I had question. trust me, I killed two harness b4 I got this one right. u have my number. call me if you get lost. if need be, send me a harness, and ill wire it for you. ill use the info from lt1swap. just pay for your supplies and shipping. be warned, i have not checked the odb2 connector for codes. I have been driving around the neighbor hood. since I have an aftermarket cam, head port work, springs, stall converter, it will need a final tune from am reputable tuner. but at least I can get the groceries. clark.

I appreciate the offer to help. I spent a lot of $$$ on this harness, so hopefully it's something minor. I need to do a cylinder balance test when I get home, hopefully that will point me in the right direction.

R

[dec010974]

I know how you feel hart rod. When I spend $$$$$, they might as well bring the strippers. I wanna feel real good with my purchase. If it's not right, it's gonna be hell n high water.

[Hart_Rod]

Originally Posted by dec010974

I know how you feel hart rod. When I spend $$$$$, they might as well bring the strippers. I wanna feel real good with my purchase. If it's not right, it's gonna be hell n high water.

LOL. I did a scan on the misfires and its misfires like crazy on 2/4/8 and some on 6. Nothing NADA on 1/3/5/7......

[Dustytrix]

Do you think that maybe the coilwires are in wrong location? Meaning the harness wires for # 8 coil are going to #2 and 4 to 6?

[Hart_Rod]

Originally Posted by Dustytrix

Do you think that maybe the coilwires are in wrong location? Meaning the harness wires for # 8 coil are going to #2 and 4 to 6?

Long story short, I'm an idiot.... It was missing on the right side because the plugs got fouled. The plugs got fouled because I had open headers that were messing up the 02 readings on that side causing it to run rich. I was trying to get the tune good enough to drive it up on a trailer to take it to the exhaust shop. I finally paid to have it towed there to get it done. With the exhaust on and a new set of plugs, most of the problems went away....I've been driving it the last couple days trying to get it dialed in.....

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