Another P0300 Thread

[bcmr]

Let me start with this:

No, my search button is not broken
Yes, I have read plenty of other P0300 Threads

The Situation:
Installed a Z1 34 Row Cooler (unplugged battery during the process). As soon as I started driving the car, I am getting a flashing SES. Highlights:

• Flashing P0300
• Code comes in as "Pending" and won't specify a cylinder
• Only happens while I am moving. Idling, revving in place, etc. I get nothing
• I notice no performance impacts whatsoever
• It is not the battery

Thoughts anyone?

[ByThaBay]

Originally Posted by bcmr

Let me start with this:

No, my search button is not broken
Yes, I have read plenty of other P0300 Threads

The Situation:
Installed a Z1 34 Row Cooler (unplugged battery during the process). As soon as I started driving the car, I am getting a flashing SES. Highlights:

• Flashing P0300
• Code comes in as "Pending" and won't specify a cylinder
• Only happens while I am moving. Idling, revving in place, etc. I get nothing
• I notice no performance impacts whatsoever
• It is not the battery

Thoughts anyone?

This is something you're going to have to diagnose (obviously). Have you checked fuel pressure? What do your maf readings look like?

[SouthArk370Z]

You will have to drive around for a while for the ECM to relearn the engine. Engine will run rough while relearning which might cause a false knock detection.

Try resetting the ECM again. Pull battery cable and step on brake pedal for a few seconds. Reconnect battery. For a MY 2009, you will need to reset the windows (several threads about that on this site) and you will lose your radio presets.

Clean your MAFs. Very easy job and only takes 5-10 minutes. Dirty MAFs can cause weird problems.