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Decided to do a tune up on the car.
Plugs, Coils, Wires, EGR Valve, PCV Valve, Air Filter, MAP Sensor, MAF Sensor, Thermostat and Coolant Flush.
Everything was going great. Until I got to Final Step, Putting Plug Wires back on Coils.
Every Single Diagram I can find for this car looks like this. And mine is exactly the same, Except when I went to do the 1/4 coil pack, My original OEM pack is reversed. And the wires are also reversed.
Mine Coil Pack Assembly Looks like this. I included the OEM Pack in the picture so you all could see its reversed of the diagram.
Can some shed some light onto this for me? Am i the only person on the planet who has a single reversed Coil Pack?
What arrangement should I use when reconnecting the plug wires?
I've never played with it before, but it shouldn't make a difference which cylinder goes to which tower on a given coil. The two posts are on a combined circuit, so it fires both every time it gets energized anyways. One cylinder on every firing is just a wasted spark. The ICM isn't commanding a spark event by cylinder, its doing it by coil pack.
I will echo the comments, as long as the plug wires for the cylinders are going to the correct coil, it does not matter which "tower" of the cylinder they use. Both towers fire at the same time. And I have tested this before.
It could be that GM changes the numbering OR that coil is off a different car where GM used a different numbering.
Reversed Ignition Coils - Am I Going crazy?
