Yesterday, I started my 2000 Maxima and is ran very rough at idle and for about 1/4 mile of driving, during which time my SES light was flashing. The light then turned off (is still off) and ran fine. The car ran fine the rest of the day with several stops and restarts.

Today, my car wouldn't start at all in the morning, just kept turning over. I waited a couple of minutes, tried again and it started right up. Same thing happened today a lunch (turned over several times, wouldn't start, waited, then started).

I had the codes checked (light was still off though), and it did have P1320 and P0300 in memory. Over the last 1-2 years I have replaced the MAF, the plugs, and a couple faulty coils. My first though was more coils based on a thread seach for the codes, but why would that cause it not to start on minute, but then start the next? Could this be fuel injection problem?

Any ideas would be appreciated! Thanks in advance!

 

Well, the car not starting wasn't associated with the codes/rough start the day before. The ring on my key broke this morning, so I clipped and taped a binder clip to my key so I could temporarily clip it to my keychain. Turns out that the binder clip was shielding the key transponder so the car wouldn't start.

Hopefully the rough start / misfire was a one time thing (although I doubt it and expect I'll be dealing with it again soon.)