everything else is fine. it did it again yesterday(symptoms), i went straight to an auto shop and picked up another one, and it ran full song afterward.... I'm wondering if it's heat, I'm running a header, that isn't wrapped or coated, and I live in Texas. I'm going to try a better coil and see if that doesn't help... I notice it being worse when I sit at idle for awhile, then it gets better after I drive it for awhile (thinking maybe the coil it getting cooler with some cooler air under the hood), but it still never gets back to 100% spark.