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Ignition coil issues

554 Views 13 Replies 5 Participants Last post by  kevlav09
06 AWD SS, ignition coils 5 and 7 were not firing correctly. A friend had a meter that links with the frequency of the coils. 5 and 7 had a very rapid frequency. I changed both coils and the truck came back from the dead. Full power, no hesitation and what felt like a misfire was gone. This has not thrown a light or a misfire code. About an hour into putting some miles on her the same issue came back, same 2 coils. Any advice?
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Spark plug wires arcing against the exhaust?
You could try swapping thpose 2 coils to different cylinders and see what codes you get
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That would lead me to believe that the wiring leading to the coils has an issue
Could be as simple as dirty/corroded/loose connectors
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