Sometimes I'm heavy acceleration I get the flashing CL and the definite misfire that goes away after about a half a mile. Under some load, makes. It sounds like it's a diesel. It's got that noise kinda like when you're in a stick and too high of a gear for two low of a speed.
I haven't found a lot of information on it. Most of it is playing the guessing game but no definitive answer.
Both batteries have been replaced and the spark plugs have been replaced. Is there a way to bench test fuel injectors to see their spray pattern?? Also the start stop system. I get a notification saying it needs service.
Eventually, I'm gonna check that fuse block under the hood there and see if that's blown.

What should I try next?

2018 Dodge Durango GT.
3.6 L

 

Flashing CEL is telling you the engine is misfiring. Visit your local parts store, and have codes read, that'll tell you which cylinders are being problematic.

What plugs did you install? What plugs did the factory call for? I know on the older trucks, they came with copper plugs, and installing the rare-earth fellers has given some folks mystery misfires.....

 

Identical to these, which i believe are factory installed.
RER8ZWYPB4

 

Ok, those guys are iridium.... Looking at the replacement prices on the mopar site, yep. Rare earth were apparently stock.

Did you re-gap them before installation?? Were you having this problem before you replaced them??

 

As far as codes go. But it's not consistent. Which one is cyclinder 1?

 

Bank one should be the drivers side, frontmost cylinder will be 1.

The system too lean code is the one you need to troubleshoot. Running lean will indeed lead to lean-burn misfires under load. Question becomes, is it REALLY running lean? Or is the O2 sensor getting lazy? Try unplugging the front O2 sensor for the drivers side, see if the problem goes away. (keep in mind, this will set a code too.... and make sure you tie the connector up somewhere that it isn't gonna get damaged.)

 

[QUOTE=

Did you re-gap them before installation?? Were you having this problem before you replaced them??[/QUOTE]

I did not mess with the gap. I did inspect them visually, the gapping seemed consistent.

the symptoms stared before the plugs but only under fast acceleration before, passing on the highway. They are now at idle sometimes.

I'm kinda leaning towards the MAF sensor.
wonder how i can bench test that too.

 

If it were the MAF sensor, I would expect to see codes for both banks, but, that's not what you are getting. Try the O2 sensor test, see what happens.

 

know exactly where this sensor is located? Driver side or passenger side?

 

Drivers side, somewhere before the cat converter.