How To: FIX 1999-2004 Ford Mustang V6 Engine Misfire - P0303 Cylinder 3 Misfire

This video shows how I fixed P0303 Cylinder 3 Misfire on my 2004 Ford Mustang V6 3.9L Engine. I found that Cylinder 3 spark plug wire was damaged due to high heat from the header. However, your problem may not be the same, but check the coil pack, spark plug wires and spark plugs. Hope this helped.

[leonardatkins]

im having that problem right now!!!! on p0304! you were verry informative, im going to try that as soon as it cools off.

[steven]

Thank you I wasn’t getting any spark in cylinder 3 from the coil pacc had a warranty took it bacc and got a new one runs great now

[AlekseySudakov]

Thanks man! My wire was not much damaged but it was touching the rail - pulling the clip that holds 3 wires towards the front created clearance and fixed the problem. Either that (electrician in me thinks 3rd can was going nuts because the wire was touching the rail) or cleaning coilpack connectors did fix P0303 for me too 😁

[douglasmorgan]

I changed my plugs and fouled #3 wire. Good tips for trouble shooting and resetting the electronic control unit. Thanks a lot.

[sxiyx]

Same wire same problem this vid saved me thanks 🙏

[trap]

Had the same exact problem bro . But I got a question can I swap one of the plug wires for a longer wire or does it have to be that short wire?

[jimmynitro]

Nice stang, what front bumper is that. Btw what happened to your changing spark plug video.

[dillonburnett]

Bruh mine has a misfire on cylinder 2 4 and 5. Plus a whole slew of more problems.

[RayquazaKing]

What if it still has power going into the wire but not as much as the others?

[kewlkirbo]

You have the number order wrong on the coil pack. Check your information.