2003 Mach 1 Misfire Help !!

[Machjuan1]

My 2003 Mach 1 has a misfire only at idle every now and then and there has fairly new spark plugs and new fuel filter I can't figure out what the misfire is and the only thing I think I could be is a coil pack ? But it doesn't throw any codes! Was seeing if anyone else had this problem or new exactly what the problem is thanks !
View: http://youtu.be/WQbIiLZbRyE

 

[COramprat]

Mince does the same thing. A coil could be bad but not enough of an issue to throw a code.

In the video, I'm not hearing a misfire. Not sure what that is.