I just bought a good looking 2002 SuperCrew this week. It does have a single cylinder misfire under load. I'm supposed to go pick it up tomorrow and I was shopping for coil options. Unfortunately the best deal I found I cant have delivered until Monday. I can buy a set of 8 locally but would be paying $60 more.

I recently replaced the coils in my wife's Expedition with the 5.4L 3V. Other than the obvious difference of the boot the connector looks the same. Can I use a 3V coil in a pinch to get me home? Drive is a little over an hour.

I read somewhere where a guy accidentally bought 2V coils for his 3V. The idle was slightly off, but it ran. However,I cant find anything on a 3V coil in a 2V.

Thoughts?

 

i assume you would be buying motorcraft/ denso coils? those are the only brand that should touch these trucks,

 

I only use what Fordtechmakuloco recommends.

 

FTM recommends Motorcraft, but Denso is who makes the MC coils for Ford now. They are usually a bit cheaper.

 

In a pinch, I would think it would work to use a different coil (within reason, it has to be similar). The cylinder will run either hotter or colder, but I would bet it wont blow up in the first couple thousand miles. But idle may not be great, and the power might be down a little, and most likely emissions will be off more than anything. I say throw it in and see how it idles. Take a spin around the block to test before going. Make sure to give it good juice, and very light acceleration as well on your test drive.

Is there a reason you don't want to just buy a single coil and throw it in? And after you replace all 8, you keep it as a spare for when this happens the next time. That's what I did when I needed a new coil.

 

If your picking up a truck and it's running like crap, I would be extra cautious. Make sure that cylinder hasn't been heli-coiled.

If your seriously doing this, buy a good coil (mc or denso) also change that plug. If you dont, it will ruin the coil. Maybe not in an hour, but might as well throw a $5 plug in there (motorcraft only).

If your skimping by and you haven't even picked the truck up yet, your setting yourself up for failure brother. Do it right or dont do it.

 

Yea FTM word is gold, trusted for sure.

These trucks are easy to work on and resilient. As with all used vehicles with problems going in, you take a chance. But hey it's cheap and most of the time it's a coil issue, specially when failing under load (45-55mph under normal acceleration right after the shift into OD). But listen to what everyone is saying here, we are Gen 10 specific in this forum. In most cases you get better info here than from a dealer.

Does the truck have a CEL illuminated ? If so, scan it with a cheap scanner to verify the problem cylinder. Disconnect that cylinders injector from the harness to drive it home. Won't hurt anything and it only takes a seconds to do.

Get your coils and most of your stuff from e bay, a mazon and rock auto. You'll save quite a bit, MC coils are half the price at e bay. Post the coils your looking at here before purchase, there's knockoffs out there that mislead.
Get Denso at Rock Auto.

Again, listen to what folks are telling you here. There's a few things that need to be Motorcraft/Denso only with these trucks.....ignition parts is a big one!

 

A single coil at the local AZ, Adv, Orei is $76. Online the coil is $24, but not until Monday as is the full set of 8 for $132 that FTM recommends. I really just want to get it home first, then I'll worry about all the details.

This quote was right from FTM YT video:

 

Truck had no CEL's, I tried reading Mode06 but no luck there. Its a rough idle and dead miss under load and got worse with heat soak. Based on O2 data stream I could tell it was from bank 1 and the valve cover on that side had quite a bit of oil wetness. My assumption would be that the plug well is full of oil and is causing the misfire. If that's the case, I'll clean out the well, dry everything off and bring it home. I got the truck for cheap.

 

On an 06 explorer 4.6 I put in 8 - accel coils with new motorcraft plugs. Within 2 years I had 5 misfires and cylinder 3 lost compression. A junked engine.

I'm not saying the accel coils did all that, but they did cause most if not all the misfires. Just my experience, take it or leave it.

I'm not buying them anymore