On my way home from work, the car started misfiring, somtimes does it when it's cold out, but usually goes away within seconds, now, it hasn't gone away in about 50 miles. I went home and checked the ECU for codes and got 0603, cyl #6 misfire, but I get no CEL, ( ghost code.) I changed the spark plug, and no difference. So my options now are either coil pack or injector, but the injectors seem to sound all the same, I sill need to check their resistance. Also, just to kake sure, CYl#6 is on the LEFT bank, correct?

Any help appreciated(I would've searched but, got a little anxiuos to wait until it gets back up and running)

 

This has happened before when i was connecting my Harlan switch, I touched the hot wire with the rpm input signal, and it missed , then i turned it off, and it was fine, about 6 months ago. And recently I may have done the same while installing my Summit RPM switch, could this have fried my coil pack?

 

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