Does anyone know if coilpacks from different manufacturers are numbered the same. I know almost everything I see for my 2002 Edge 3.0 U shows packs are to be:
[5 1]
[6 2]
[4 3]
WIth three coils in a pack and three signal wires, plugs will fire at every TDC and cylinders 180 off have to be paired together... thus the 5-1, 6-2, 4-3 patern.
But after I changed my wires, plugs and the coilpack last fall, to get rid of a small mis, following this pattern my truck would hardly run. I found another diagram online showing a
[6 1]
[5 2]
[4 3]
Patern... tried it out and it ran smooth again. The small mis was still there but much smoother than it was with the first coil patern. Since I've had more time lately with this covid crap I decided to look into it again. Replacing my IAV got rid of the check engine light and I dont have to double pedal at stop lights anymore. But I also found 5 & 6 only have 30psi, so now I'm wondering if the compression issue was there before or did I fry my valves by crossing 5 and 6 wires. But if so and they were backwards, why did it run smoother backwards than it did the right way? Did the after market coils have different wire routes internally to keep the patern straight 1-6 for some reason or what?

 

Welcome to the forum

Crossing spark plug wires won't hurt any engine , it just won't run well

First things first
V6 engines are balanced in Pairs, that rotate 120deg apart
Pretty much all V6s use these pairs
1-5
2-6
3-4
Look familiar?

V6 Coil packs only have 3 coils inside, NOT 6
Ford, and a few others, use Waste Spark, very first spark system ever used, if you have a lawn mower it uses waste spark, very reliable system

So 1 and 5 are on ONE coil and spark at the same time, one on power stroke, the other on exhaust stroke, exhaust stroke spark is wasted, hence the name waste spark
2 and 6 spark at same time
3 and 4 spark at same time
So only 3 coils are needed for 6 cylinders

As far as wiring
2 and 6 will ALWAYS be on the center coil in the pack

1 and 5, and 3 and 4 will be at the ends
SO............
1 5
2 6
3 4

OR

3 4
2 6
1 5

It also doesn't matter if 1 and 5 wires are reversed
SO...............
5 1
2 6
3 4
Would work fine
as would
5 1
2 6
4 3

Because they share the same coil the pairs can be reversed

So no,
[6 1]
[5 2]
[4 3]

wouldn't work, so you have other issues if it seemed to run better that way

 

All right all right guys this is what I got if the picture didn't show up still in her 1 120 cylinder 2 100 cylinder 3 0 cylinder 4 90 cylinder V 125 cylinder 6105 any help would be appreciated guys

 

All right all right guys this is what I got if the picture didn't show up still in her 1 120 cylinder 2 100 cylinder 3 0 cylinder 4 90 cylinder V 125 cylinder 6105 any help would be appreciated guys

 

You have a burnt valve in #3, thats the only way you can get 0psi

The others are low but that could just be the gauge, 3.0l should be above 150psi

So heads need to come off

Blown head gasket or cracked head will be low PSI but never 0psi

 

I understand the 3 coils, the waisted spark, all that. But I've put >10k miles on the truck since I replaced the wires, plugs, and coil. That's 10k miles with 5 and 6 crossed if this coil pack is built and routed exactly the same as an OEM coil.... how do all six of my plugs look identical when it comes to examining them for the tell tale signs of engine trouble they hold. I'm thinking this packs internal wiring has 5 and 6 crossed after the coils just to follow a straight 1-6 pattern for the plug wires. That's the only reason I can come up with for it running smooth and showing the same burn paterns because if 5 and 6 were misfiring for 10k miles the plugs would show it... right? I'm going to buy a different brand coil tomorrow and see if the engine runs the same with the same odd order or if it takes the typical patern to run right. I think that'll be easier than finding tdc and using a timing light.

 

Not sure what to say, never came across a V6 coil pack wired that way for the Ranger V6s, all were
3 4
2 6
1 5

Or
1 5
2 6
3 4

But never seen 1 with 6 or 2 with 5