having an intermittent p0300 code on my '06 3.7 liter. Not sure what triggers it, but the few times it's happened the car's been at a stoplight or otherwise idling when engine is warm. I thought I fixed the problem after changing the plugs about a week ago, but the problem continues. Engine runs rough/wants to stall out and CEL flashes. It happened again today and this time I could barely get the vehicle to move under its own power. I shut it off for a few minutes, started it up and it ran fine after that.
Aside from the P0300, there's a downstream O2 sensor code that comes and goes, but it's been doing that long before this problem cropped up.
I did some digging on the site here and on Youtube and it looks like my problem could possibly be at least one of 3 things: 2 or more coils are bad, the automatic shutdown relay (ASD) could be malfunctioning, or an upstream O2 might be faulty.
Aside from the P0300, there's a downstream O2 sensor code that comes and goes, but it's been doing that long before this problem cropped up.
I did some digging on the site here and on Youtube and it looks like my problem could possibly be at least one of 3 things: 2 or more coils are bad, the automatic shutdown relay (ASD) could be malfunctioning, or an upstream O2 might be faulty.