[slomach03]

Originally Posted by ab_mach1

They often have intermittent issues before they will make a CEL come on. My experience with them has been random misses at WOT and occasional “shark bite” like misses at every-day type driving.

What I do to help make sure it really is a COP going bad and not a bad connection is to use dielectric grease on the spark plug end of the boot. I’ve had to fix three of my COP wire harness clips too, but you’d see that problem upon visual inspection.

Thanks Lee. Sounds like I do have a bad COP then. I ordered new ones from AM and I hope to report back in a week with the issue cleared up. Thanks.