SOHC running rough

[MSGia]

Good evening all. I just installed a new coil pack, wires, and spark plugs on my 2010 Ranger 4.0SOHC. To my knowledge, I did everything right, all torqued down, wires are in the right place, correct gaps, etc. I started it up and the engine shakes pretty bad and the rpms jump up and down. It just doesn’t sound healthy/like what it did before. Does anyone have any idea why this could be? I didn’t let it run long enough for any codes to pop up.

 

[gw33gp]

When the coil pack and wires are replaced, it is fairly common that the wrong firing order is used. The coil pack firing order is not straight forward.

You should also check to make sure you have the spark plug wire boots fully seated on the spark plugs. The first time I replaced the coil pack and wires, it ran fine until I took it for a drive and stepped hard on the accelerator pedal. It started misfiring. I found one of the boots was not fully seated on the spark plug. I pushed it on more and the problem was solved.

 

[MSGia]

When a coil pack and wires are replaced, it is fairly common that the wrong firing order is used. The coil pack firing order is not straight forward.

This is what I used to check, and I also replaced the wires one at a time. I’m not sure that is the issue. Are you saying the new coil pack is different?

 

[gw33gp]

I doubt the new coil pack would be different. As you can see in the image you pasted; the 4, 5, 6 are not in order, 5 and 6 are flipped. Since 1, 2, 3 are in order is it easy to think 4, 5, 6 is in order.

I also edited my post and added another paragraph. That may be helpful too.

 

[MSGia]

I checked again. Every wire is fully seated and in the right place.

I doubt the new coil pack would be different. As you can see in the image you pasted; the 4, 5, 6 are not in order, 5 and 6 are flipped. Since 1, 2, 3 are in order is it easy to think 4, 5, 6 is in order.

I also edited my post and added another paragraph. That may be helpful too.

 

[MSGia]

I guess the only other bit of info I left out was this is the first startup in about a month, but I don’t know how much that has to do with anything.. How safe would it be to let it warm up with a (maybe) misfire?

 

[alwaysFlOoReD]

I checked again. Every wire is fully seated and in the right place.

Check again. Once upon a time I checked 4 times before finally realizing I was wrong.

 

[sgtsandman]

If all that checks good, it might be a bad spark plug wire. Poorly crimped connector or the wire is broken internally. New parts quality isn't whatbit used to be.

Of course it could also be an issue with the coil pack for the same reason. Sadly, new doesn't necessarily mean good anymore.

 

[MSGia]

If all that checks good, it might be a bad spark plug wire. Poorly crimped connector or the wire is broken internally. New parts quality isn't whatbit used to be.

Of course it could also be an issue with the coil pack for the same reason. Sadly, new doesn't necessarily mean good anymore.

Thanks for the replies. I hope it isn't the wires, this is the second set of new wires I have bought for this project. I guess I will try the using old coil pack first. Also, how safe/unsafe is it to let the truck warm up like this?

 

[sgtsandman]

Thanks for the replies. I hope it isn't the wires, this is the second set of new wires I have bought for this project. I guess I will try the using old coil pack first. Also, how safe/unsafe is it to let the truck warm up like this?

It will probably ok. It might throw some codes but as long as you can figure out what the problem is and don't run it like that for days at a time, it shouldn't hurt anything. My guess is that the code(s) thrown will br some kind of misfire code. The plus side is that the code(s) thrown will tell you which cylinder(s) are misfiring.

 

[MSGia]

The coil pack is not the issue. But I noticed there is a grounding clip attached to the coil pack I had installed wrong, but it didn’t fix anything.

 

[sgtsandman]

The coil pack is not the issue. But I noticed there is a grounding clip attached to the coil pack I had installed wrong, but it didn’t fix anything.

Little details matter. So no harm in trying.

 

[MSGia]

How long does it take for a code to pop up, I don’t want to wreck my new cats

It will probably ok. It might throw some codes but as long as you can figure out what the problem is and don't run it like that for days at a time, it shouldn't hurt anything. My guess is that the code(s) thrown will br some kind of misfire code. The plus side is that the code(s) thrown will tell you which cylinder(s) are misfiring.

 

[sgtsandman]

How long does it take for a code to pop up, I don’t want to wreck my new cats

That depends on drive cycle and how long it's been running. You might get it right away or it might take a run or two more before they pop up.

 

[MSGia]

No code yet. I have been letting it idle for about 40 minutes combined for the past few hours, it will run fine for up to a minute before running rough, and then go back.