Hi all,

Seems every time I post here it's because of some issue w/ the Z. A few days ago I started the car in the morning and got a weird rough idle. It would come and go randomly- no pattern I could notice.

During easy acceleration, sometimes it feels like I misfire, but not too often. During hard acceleration (near WOT) the motor is definitely misfiring. Sounds like a subie until I lay off.

So, I replaced all my plugs and used MAF cleaner on my MAF. Still same issue. Oddly no codes are being thrown... has anyone run into something similar and could point me in the right direction?

This happened to me once a few years ago and I threw a misfire code. Turned out I had a bad coilpack and the crank position sensor went- replaced those and I was off and running again. Seems I'm not so lucky to get a code this time

Thanks!

 

probably another bad coilpack. it'll eventually throw a code.