But how many for #1 cylinder, intermittent causing the coil to burn up. It is possible the injector could be bad too. Only has a P0301 code.
The injector may cause a misfire, but will that kill the #1 coil?
That said, inspect the wiring at the #1 injector to be sure it's not damaged.
The other thought I had is, maybe the #1 plug is somehow bad leading to misfires and coil failures. Maybe there's a hairline crack in the ceramic, for example. Try swapping plugs 1 and 2, and see if the misfire moves.
Lastly, inspect closely the wiring going to the coil pack. I can see how a damaged wire could cause misfire, but not sure how that would kill the #1 coil. Nonetheless, make sure the wires are not damaged at the connector.
I've seen someone get a bad coil module right out of the box, but you've replaced it twice now, right? So I'm thinking the problem lies elsewhere, but I'm about stumped.
Doug
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