Pinpoint your problem so you don't waste money on parts you don't need. Whne you say upper harness, are you referring to the coil pack harness?kings88 wrote:Been getting an inconsistent misfire on coilpack #2. I replaced the plug from #2 with a different one. Soldered and shrink wrapped it. It was good for a while, now it's acting up again. Still the same cylinder. I just swapped#1 and #2 thinking maybe its the coilpack but still no luck.