watch3612

This forum has been extremely helpful in the amount of information supplied about my truck, and I finally have a chance to provide some rather than reaping the benefits of everyone else's experiences. Moderators - please feel free to move somewhere more appropriate.

While replacing my original spark plugs at 32K, I inadvertently broke the retainer portion of the grey coil plug. Although I appreciate the use of a well placed zip tie (which did just fine for 500 miles), I did not feel a coil plug on a 2012 F150 was a great application.

I'm not sure of the applicability of this specific information to anything other than a 2012 F150 with 3.5L Ecoboost, but I wanted to give everyone a little insight into the process I followed and hopefully the courage to tackle this No Splice approach.

Here is what I did:

1. Ordered Ford Part No. WPT-1284, which included full male replacement plug with ~8" of wire and splicing supplies.



2. To disassemble the replacement plug, I utilized a set of wire cutters to press down the two retaining clips on the black rear section (see above picture which shows black portion). The goal here is to retain the integrity of the grey portion, everything else is expendable.

Second, I used a small screw driver to pry the off-white plug face off. It required several low pressure iterations in the various slots of the grey plug.



Once the terminals are exposed, I used a ~1.5 mm screw driver to press down the retaining tabs located just under each of the three terminals shown in the picture below. Push the tabs away from the terminals and lightly pull on the wire or push on the terminal face to push it through the grey plug and out the rear, towards the black retaining clip. Do not push hard, or use a large screw driver as you will break something.



Grey plug separated:



Inversely, on the truck's coil plug I considered the grey portion expendable and neatly trimmed the plug portion holding the black retaining piece. I heated the plug with a heat gun and used a sharp razor blade to score the grey section to be removed. Keeping the black retainer tabs in place meant it would lock with the new grey plug. You can see the difference in the plug below and the one above.



The rest of the removal procedure on the truck was the same as above.



For assembly, just reverse the above and you have a factory replacement for your broken coil plug.

Best of luck!

BCMIF150

Great work and good information.