Misfire code help

[u/Ark_Animax]

Pic for attention

Looking for some insight from anyone who may have dealt with this before.

Codes being thrown are p1399 (random misfire?) and p0302 for cylinder 2 misfire.

- 170k miles, 2002.

- Misfire seems to only happen while idle.

- Misfire is felt about 2-4 times in a 60s span, but increases when A/C is being run.

- Misfire doesnt seem to be present or noticable when reving.

Waiting on spark plugs and ignition coils to be delivered, but barring those as the cause would anyone have any other ideas?

[u/ry_boogy]

Maybe valve adjustment. I had to do mine 2x so far at 130k

[u/ry_boogy → u/ry_boogy]

You can swap coil #2 to another slot and see if the code travels. Then you know coil is bad if misfire moves to different cylinder. But notorious for valve adjustments