Help with code P0300
I started the car yesterday morning and noticed it idling a little rough. Nothing significant. But not it's usual self. Pulled away from the house and the problem was gone. Started up this morning and got the same rough idle. Then the CEL and VSC fun times popped up. Plugged in the techstream and saw P0300 as the one and only code.
Seems the rough idle is only present when the engine is cold. Can't say that with 100% certainty. Just what my butt tells me during the driving experience to and from work.
Any ideas on what this is? Looking online I see others (non LS owners) saying it may have something to do with a misfire. I'm not sure where to find out in techstream which (if any) cylinders may have had a misfire though. Can I locate that in techstream? Or is this possibly something else?
Appreciate any help on this.
'01 UL 430
Last edited by honasbone; Yesterday at 01:06 PM.