How to test your coils on a 5.4 ford motor

Replacing This coil did fix the misfire problem...also the truck would shake when under a load. Accelerate going up hill or pulling out

[nigelcarren]

Dear William, What this video needed was you thanking your sponsor at the start for almost as long as the actual video, loud annoying music over the top making your voice almost impossible to hear, then you advertising your PayPal/Patreon at the end for just as long as you thanking your sponsor at the start, therefore actual program content is no more than third of actual video length!! (Sarcasm). Cheers mate, this was like the Old YouTube, where you could click and solve a problem. Thank you and best wishes from an Englishman in a French forest. 🏆

[daniels.m.]

I really liked that. usually we see people testing just at the plug terminal, not inside the coil as you did. great job!

[frankmaceri]

Thank you, you are the only person that was very direct and gave information without me having to wonder what I was looking for. I have a Jeep instead of a ford, but I get it. Thank You so much. God Bless.

[douggreen]

Finally someone knows how to get the point and not give a huge line of bologna

[bsto]

Cut and dried! No bull! I love it. Thank you!

[Psittac]

THANK YOU for this video, I have been following advice of several people and testing many different things. Started suspecting the worst as she may have run low on oil. Tonight at the advice of a mechanic friend I checked the coil's like I saw in another video and they all came back good, damn another thing it isn't. Until I read the top comment saying that was the wrong way to do it. I came to your video and did it your way and just found one that's bad!!!! Thank You! Now I can do a super charger instead of a rebuild cause I know she's got good compression.

[majedabumishari]

Thanks man all the way from Saudi Arabia. This is a very accurate simple way to pin point the problem.

[ryanroy]

You can pull that boot off and pull the Spring and there is a little metal clip the spring hooks to. if you clean that Connection then put the Spring back on you probly get back to 5.1oms the coil its self is good it's just get a bad connection at the Spring

[NspaceN]

Thank you for sharing your findings. Always appreciate the time ppl take to do that especially with the detail. Really does help if you're troubleshooting. Take care sir.

[davidhughes]

I like the video keep up the good work I am an electrician and you can check the coils that way Cattails that the coil is burnt up

[williamcarter]

Trail gear is the name of coils i put on my truck. Got them on Amazon for $37.99 been on my truck for on year and haven't ho any problems with them .. the first one was Accel.. lasted about three months. At $230.00 ..the cheep one i recommend..

[MindyourGod]

5 years later and still relevant to today. Thanks 2 bad coils here ohmed good on the primary side and nothing on the spark side.

[encinobalboa]

Most vids do not test resistance on the spark plug end. Good tip. I used this technique at LKQ to test some coils from a wreck with 159k miles. I got similar readings so I bought a couple of them at $18 each. They were Motorcraft OEM. Did the swap and the cylinder is back to normal.

On a side note, I tested the bad coil and it returned stable reading at the coil end of 5.85 Ohm. This was higher than any of the others. Reading did not jump around like the bad coil in the vid. I suspect mine has a thermal related fault that causes it to loose spark at operating temperature. It fires fine when cold but starts to miss after a few miles.

[alexandersumrall]

This really helped! Thank you for taking the time to make this video.

[Duke_of_Prunes]

Thanks for the help! Can't afford to go to a mechanic this month.

[Redtoolguy]

Thanks for the video I’m hoping to apply your method today.
I’m getting ready to replace my coils for the 5th time in 13 months.
It won’t stop running like shit when it wants to.
One day it’s fine the next it’s bucking and missing so bad you think the motor is gonna come loose from the motor mounts and 5 seconds later it’s running like a new truck.
Also I’ll add sometimes it will throw a code and check engine light will come on other times it won’t.
I’ve used $600 motorcraft coils
$300 AutoZone coils
$250 roc auto coils
3 different cheap brands from Amazon only to find the motorcraft VS Amazon $40 per set coils all run the same way and that’s pretty sad.
Also will add plugs have been changed 3 times now all plugs have been motorcraft brand.
And each time it’s a cylinder misfire code it’s usually the same cylinders doing so.
I can pull the bad code - misfire coil and move to another cylinder and sometimes the misfire moves with the coil and other times it doesn’t follow the coil.
Not sure how a coil can misfire in cylinder 5 but be fine in cylinder 6 etc.
I’ve even went as far as replacement of all coil pigtail clips thinking it was a wiring problem no such luck.
ANYONE have a clue what’s wrong here I’d greatly appreciate any advice.
Oh sorry forgot to add my current set is the yellow set you appear to be using right now.

[bossdog]

Nice one buddy. I've got a coil playing up, I'll try this as well.😊

[goldysgarage]

Great video William. I had a few cylinders misfiring. This solved it

[JustaGuy-dgnn]

Following your method as we speak.
Thank you sir

[Bobbyabafarida]

You hot straight to the point, Thanks A lot.
you seem from Kevin skinner's Hometown 🌱😊