What is a good set of replacement coils?

[Turbo Cow]

2021 Mustang GT, I need a set of coils to test out. I have this reoccurring cylinder outage that happens on the highway at 21 to 2200 RPM. The whole car vibrates. I can't figure it out I've changed spark plugs already. Ohm tested coils. I guess at this point I'm going to start replacing parts. Looking for a set of coils that you would recommend. Are the same one looks like it is a standalone coil with a spark plug wire hanging off of it. Thanks for any help

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[robvas]

Motorcraft

 

[Sparky1337]

Does it not throw a misfire code? That would be pretty odd for it not to, and if it is just swap coils and see if the code follows it. It’s a lot cheaper than buying 8 new motorcraft coils.

 

[Turbo Cow]

Does it not throw a misfire code? That would be pretty odd for it not to, and if it is just swap coils and see if the code follows it. It’s a lot cheaper than buying 8 new motorcraft coils.

Nobody has been able to help me with this random misfire. Its been at the ford dealership for weeks. At different dealerships. I've taken the service manager for rides and shown them where its running rough at 2200 rpm in 10th on the highway but they can't feel it. I can. Its always there at some level. Last night on the way home it felt like it downed the entire bank of 4 cylinders. Whole car was vibrating enough to wake my wife up from her passenger princess sleep. All.i could say is, its happening again.
Last codes I got off it were some coil code. I'll have to check my previous posts on here for the code.
No check engine light even though it happened for a good 30 seconds.
Im fed up. Only thing I can do now is throw parts at it.
I've tried different tuners. Ford performance, Lund, nothing changes it.

 

[bKennedy]

Seems strange that you only feel the miss at a certain RPM, could you be experiencing torque converter shudder?

 

[Turbo Cow]

Seems strange that you only feel the miss at a certain RPM, could you be experiencing torque converter shudder?

Car loses power when it happens. I dont think its converter.

 

[Turbo Cow]

Since my 2021 Mustang has seven coils that look the same but one coil has a spark plug wire on it can I switch to all eight that are identical or do I have to keep the same style of 7 and one that looks like a regular coil with a spark plug wire on it?

 

[bKennedy]

You are going to need the one that has the wire on it if your car is set up the same as mine. I believe the high pressure fuel pump would interfere with the coil mounting directly over the plug and that is why it is offset with the wire going to the plug. Even if that is not true you can not mount the coil over the plug, like the others, as the mounting bracket is offset.

 

[NightmareMoon]

I assume you’ve tried a crank relearn

 

[bKennedy]

Has any of the dealerships you have visited hooked up a good scan tool to see what is going on when out for a test drive. If you are losing power they should be able to see a no spark condition on the offending cylinders if that is the problem.

 

[Craig Brown]

Motor craft coils

 

[Garfy]

Nobody has been able to help me with this random misfire. Its been at the ford dealership for weeks. At different dealerships. I've taken the service manager for rides and shown them where its running rough at 2200 rpm in 10th on the highway but they can't feel it. I can. Its always there at some level. Last night on the way home it felt like it downed the entire bank of 4 cylinders. Whole car was vibrating enough to wake my wife up from her passenger princess sleep. All.i could say is, its happening again.
Last codes I got off it were some coil code. I'll have to check my previous posts on here for the code.
No check engine light even though it happened for a good 30 seconds.
Im fed up. Only thing I can do now is throw parts at it.
I've tried different tuners. Ford performance, Lund, nothing changes it.

If it was misfiring for 30 seconds, it should have set a pending code at the least. Misfires are a high priority DTC so it should at least do a pending code. Of course not all code readers will do pending, only hard DTCs (especially the cheap ones).

 

[Garfy]

You are going to need the one that has the wire on it if your car is set up the same as mine. I believe the high pressure fuel pump would interfere with the coil mounting directly over the plug and that is why it is offset with the wire going to the plug. Even if that is not true you can not mount the coil over the plug, like the others, as the mounting bracket is offset.

Yes, that's the #3 coil that has the plug wire on it. All Gen 3 and up with port and DI injectors have that one coil with the plug wire on it.

 

[Turbo Cow]

If it was misfiring for 30 seconds, it should have set a pending code at the least. Misfires are a high priority DTC so it should at least do a pending code. Of course not all code readers will do pending, only hard DTCs (especially the cheap ones).

Would Forscan show any different than my cheap lund/fordperformance handheld tuner?

 

[Sparky1337]

Nobody has been able to help me with this random misfire. Its been at the ford dealership for weeks. At different dealerships. I've taken the service manager for rides and shown them where its running rough at 2200 rpm in 10th on the highway but they can't feel it. I can. Its always there at some level. Last night on the way home it felt like it downed the entire bank of 4 cylinders. Whole car was vibrating enough to wake my wife up from her passenger princess sleep. All.i could say is, its happening again.
Last codes I got off it were some coil code. I'll have to check my previous posts on here for the code.
No check engine light even though it happened for a good 30 seconds.
Im fed up. Only thing I can do now is throw parts at it.
I've tried different tuners. Ford performance, Lund, nothing changes it.

I’m gonna be honest, I’d go back to stock and start from there. Troubleshooting a tune with that many fingers in it isn’t easy.

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