Ford ignition coil testing 

I’ve been scouting the internet for this; what seems like very important and relatively basic information. Thank you for making this video, with clarity and depth.

Electronic Ignition "E Core Coil" from 12:30 - 18:59. I'm working on a 1984 F250 and lost spark. I now know how to test the coil. Thank you!

Fantastic video, very helpful and educational. Thanks!

I was looking everywhere for explanations of the e core coil thankyou

Awesome video! Very informative. Thank you so much!

Wouldn't it be more accurate to test this on a coil that just ran and is nice and hot? That way you get a true reading of the resistance valued in it's normal operating temperature range

hello Brian, my E core coil or Screamin demon coil on my 91 foxbody 5.0 the lower primary resistance test i got 000.5 and drops to 000.2 ? is that bad ? when your test was 000.5 and went up to 000.6 ......and the secondary windings i got 08.88 k and you got 07.98 k

The voltage is stepped up by vertue of the fact the primary as fewer windings than the secondary. There, I said it!

I have a 3.9 v6 mustang and coil pack that you show at 27:00 I am not getting a misfire code but I am getting what feels to me like a small misfire at idle. I am thinking it is ignition related. Could I test the coil with your method here and rule out the coil? I see they are $105 and I don't want to throw away that kind of money. That's what lead me to your video. I want to diagnose the best I can and test different components before spending the time and money

hey thank you for the info and video! - just fyi, the volume of your voice is at high resistance (low output), which causes me to turn my volume up , to hear you - but when you bang your video camera(phone) on the bench - it might cause an open circuit in my speakers. fwiw.

My secondary coil is at 13.03 is that bad?

What else is in that picture