I'm getting misfires on cylinder #2, but only when the throttle position is less than 5% (light cruising, idle, park, etc.). Any throttle over 5% and the misfires are gone. This started about 2 weeks ago right after I switched back to 93 gas from e85. I really don't think the switch back caused the problem - just a coincidence, but I thought I would mention it. When I'm cruising, the misfire count gets high enough that the TCC unlocks, so that is annoying, and I'd like to get this resolved. Any suggestions are appreciated.
Here is what I have done so far:
Swapped plugs - misfire stays on #2
Swapped plug wires - misfire stays on #2
Swapped coil packs - misfire stays on #2
Swapped injectors - misfire stays on #2
Cam is stock with 1.9 roller rockers and 105# springs. Spark plug in #2 looked great, and all plugs looked exactly the same. Car pulls very strong with no hesitation.