DLooper

About a week ago, I was sitting at a stoplight when all of the sudden my Z's idle gets rough, sputtery, and shaky. I accelerated from the stoplight with noticeably reduced power. I drove it to AutoZone and got "Misfire Cylinder 2" and "Knock Sensor" error codes.

The next day, I was able to successfully replace the knock sensor, but it did not fix the issue. I drove it back to Autozone, they cleared the codes, and I received the same two error codes.

What am I missing here? Has anyone dealt with this or can anyone provide advice?

(I can hear a high pitched clicking noise about two times per second under the hood, may or may not be related.)

bealljk

iTrader: (13)

Can we all assume that you havent performed any modifications or alteration that would prompt a misfire / detonation?

I hate blaming things on bad gas but you may want to drive your car at a light load for as long as you can and then fill up at a different station. You could also dump one of those 'octane in a bottle' bottles into this fuel to see if it stabilizes things.

DLooper

Yea it's all stock except rims and suspension, nothing that would cause a misfire. I seemed to rule out bad gas because I filled up and drove about 3/4 of the tank and the problem started at 1/4 tank.

'WhiteRoadster

My guess is the ignition coil aka coil pack. Id suggest replacing it with the one next to it to see if the misfire changes cylinders. Might also be a fuel injector.

zakmartin

Test the coil pack before you replace it. Swap it out with a pack from a different bank and see if the problem follows.