Cylinders Misfiring

[ChuckD2752]

Hi All, I’m trying to figure out why I’m experiencing 2 cylinders misfiring in my 2017 Mustang GT Premium. Cylinders 3 & 7 misfire every now and then when the car hits 45-50mph for about 15+ seconds and then start working again.

I’ve replaced the spark plugs and the ignition coils. Any ideas on what to try next? Thinking about taking it to Ford next.

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[ChuckD2752]

I was wrong, the cylinders misfiring are 4 & 7. The codes I’m getting are P0300, P0304, and P0307.

 

[ChuckD2752]

I did a crank relearn through my NGage and fixed the problem!

 

[Clint81]

Thanks for the updates, I am also having intermittent misfires on #4 ( P0304 ) and need to try the relearn sometime. Good to know this helps in some cases!

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