Best coil packs for a 96 mystic cobra

PurpleAndGreen96 · Dec 30, 2019

Hello everyone, I am a new proud owner of a 96 Mystic cobra and recently have had misfire issues in cylinder one. They replaced all the plugs and still have the issue and although I have unplugged the ground wire at the battery to reset the check engine light being on, The car still sputters and jolts wind mashing the gas upon initial throttle. When it gets into higher rpm’s it doesn’t seem to sputter as much so I’m thinking it’s probably the coil packs. Any help on choosing the best coil packs would be greatly appreciated.

General karthief · Dec 30, 2019

Stock Ford coils.

PurpleAndGreen96 · Dec 30, 2019

Hey thank you very much are you referring to Motorcraft then?

wmburns · Dec 31, 2019

Just wondering about the spark plug wires themselves. How's the condition of the spark plug wires?

Also wondering. Are any other cylinders misfiring? Why is this important? Because of the waste spark system used in a coil pack application a bad coil pack would cause a misfire in the paired cylinder. Which is why I would look first at things that might cause a misfire of a single misfire.

+1 on using Ford Motorcraft coil packs.

PurpleAndGreen96 · Dec 31, 2019

Well from what I’ve read and the symptoms that are happening with the car, it seems to sputter and jolt in the lower RPM range when giving it a significant amount of throttle and the symptoms seem to be pointing towards a coil. I haven’t Switched them yet to determine whether it is in fact a coil yet but I’m sure I’m going to end up replacing them anyway and was just kind of wondering which kind I should grab. Also from what I’ve read I should stick to the stock coils I guess. The wires seem to be in pretty good shape and considering the miles on the car which are just over 50,000, less than 50,100 to be More precise. But I agree with you and the wires could be a problem as well but was thinking about replacing the coils first just because of the symptoms that seem to be corresponding with what a bad coil will make the car do

PurpleAndGreen96 · Dec 31, 2019

PurpleAndGreen96 said:
Well from what I’ve read and the symptoms that are happening with the car, it seems to sputter and jolt in the lower RPM range when giving it a significant amount of throttle and the symptoms seem to be pointing towards a coil. I haven’t Switched them yet to determine whether it is in fact a coil yet but I’m sure I’m going to end up replacing them anyway and was just kind of wondering which kind I should grab. Also from what I’ve read I should stick to the stock coils I guess. The wires seem to be in pretty good shape and considering the miles on the car which are just over 50,000, less than 50,100 to be More precise. But I agree with you and the wires could be a problem as well but was thinking about replacing the coils first just because of the symptoms that seem to be corresponding with what a bad coil will make the car do. And yes it’s only a misfire in cylinder one

General karthief · Dec 31, 2019

Now I am not a mechanic, but I hang around a repair shop alot, although they only allow me to answer the phone and occasionally use a broom (supervised of course) and sometimes there is water/oil in the area where the spark plug/coil lives.
Will a scan not show the miss firing cylinder?

PurpleAndGreen96 · Dec 31, 2019

General karthief said:
Now I am not a mechanic, but I hang around a repair shop alot, although they only allow me to answer the phone and occasionally use a broom (supervised of course) and sometimes there is water/oil in the area where the spark plug/coil lives.
Will a scan not show the miss firing cylinder?

Yes I had it scanned and it’s miss firing in cylinder one. It’s the only cylinder misfiring as far as I can tell

PurpleAndGreen96 · Dec 31, 2019

PurpleAndGreen96 said:
Yes I had it scanned and it’s miss firing in cylinder one. It’s the only cylinder misfiring as far as I can tell

And the general area where the coil packs are located, the area seems to be pretty dry and oil free

wmburns · Dec 31, 2019

PurpleAndGreen96 said:
Well from what I’ve read and the symptoms that are happening with the car, it seems to sputter and jolt in the lower RPM range when giving it a significant amount of throttle and the symptoms seem to be pointing towards a coil. I haven’t Switched them yet to determine whether it is in fact a coil yet but I’m sure I’m going to end up replacing them anyway

Just wondering. Are you looking for help to justify repair by "part swapping" method of trouble shooting?

In your coil pack application a no cost option is to swap the coil packs side to side. Or buy a single coil.

FYIIW, I have had direct experience with trouble shooting a single cylinder misfire on my 1996 GT. In this particular case it did turn out to be a bad spark plug wire. Confirmed by swapping individual wires. Bottom line. It is possible for a spark plug wire to look fine but in fact be confirmed bad.

Or try this old racer's trick. Run the motor in a totally dark location. Look for the blue hue of escaping spark.

Shuttleman83 · Dec 31, 2019

Make sure coolant isn't leaking down into the cylinder or even oil (from bad gaskets, intake, or even thermostat housing).

PurpleAndGreen96 · Jan 1, 2020

wmburns said:
Just wondering. Are you looking for help to justify repair by "part swapping" method of trouble shooting?

In your coil pack application a no cost option is to swap the coil packs side to side. Or buy a single coil.

FYIIW, I have had direct experience with trouble shooting a single cylinder misfire on my 1996 GT. In this particular case it did turn out to be a bad spark plug wire. Confirmed by swapping individual wires. Bottom line. It is possible for a spark plug wire to look fine but in fact be confirmed bad.

Or try this old racer's trick. Run the motor in a totally dark location. Look for the blue hue of escaping spark.

Hey thanks for your help. I haven’t gotten a chance to work on it yet for troubleshooting because it’s been snowing and cold here in Ohio lol but I plan on doing exactly what you’re talking about on both examples and I’m hoping it’s just a wire really. But I might just replace everything. Wires and both coils just to have all new stuff while I’m at it

PurpleAndGreen96 · Jan 1, 2020

wmburns said:
Just wondering. Are you looking for help to justify repair by "part swapping" method of trouble shooting?

In your coil pack application a no cost option is to swap the coil packs side to side. Or buy a single coil.

FYIIW, I have had direct experience with trouble shooting a single cylinder misfire on my 1996 GT. In this particular case it did turn out to be a bad spark plug wire. Confirmed by swapping individual wires. Bottom line. It is possible for a spark plug wire to look fine but in fact be confirmed bad.

Or try this old racer's trick. Run the motor in a totally dark location. Look for the blue hue of escaping spark.

Shuttleman83 said:
Make sure coolant isn't leaking down into the cylinder or even oil (from bad gaskets, intake, or even thermostat housing).

OK thank you for your help and I’ll take a look

PurpleAndGreen96 · Jan 1, 2020

PurpleAndGreen96 said:
Hey thanks for your help. I haven’t gotten a chance to work on it yet for troubleshooting because it’s been snowing and cold here in Ohio lol but I plan on doing exactly what you’re talking about on both examples and I’m hoping it’s just a wire really. But I might just replace everything. Wires and both coils just to have all new stuff while I’m at it

Do you have a particular set of packs and wires you would recommend?

Noobz347 · Jan 1, 2020

PurpleAndGreen96 said:
Do you have a particular set of packs and wires you would recommend?

Yes... Original Equipment Manufacturer (OEM).

PurpleAndGreen96 · Jan 1, 2020

Noobz347 said:
Yes... Original Equipment Manufacturer (OEM).

Thank you

Noobz347 · Jan 1, 2020

PurpleAndGreen96 said:
Thank you

Consider that your 96 has how many miles? They're probably all original, have lasted this long, and even now is only 'suspect'.

I'd say that it's a pretty good indication of durability.

PurpleAndGreen96 · Jan 1, 2020

Noobz347 said:
Consider that your 96 has how many miles? They're probably all original, have lasted this long, and even now is only 'suspect'.

I'd say that it's a pretty good indication of durability.

It has 50,000 miles and I’m having a misfire in cylinder one. And I was thinking it could be a coil pack but from input from a couple other people in this thread seem to be pointing towards a spark plug wire. I was reading and based on the symptoms though of the car, I’m getting sputtering and jolting when mashing the pedal in the lower RPM range. The symptoms aren’t that prevalent in the higher RPM range from around 3000 and up I suppose And could be a coil pack as well based on those symptoms. But because it’s only one cylinder they say it’s probably more likely a spark plug. I haven’t really done any sort of troubleshooting yet because it’s been cold and snowing up here in Ohio but I suppose I’ll try every suggestion you folks have.

PurpleAndGreen96 · Jan 1, 2020

PurpleAndGreen96 said:
It has 50,000 miles and I’m having a misfire in cylinder one. And I was thinking it could be a coil pack but from input from a couple other people in this thread seem to be pointing towards a spark plug wire. I was reading and based on the symptoms though of the car, I’m getting sputtering and jolting when mashing the pedal in the lower RPM range. The symptoms aren’t that prevalent in the higher RPM range from around 3000 and up I suppose And could be a coil pack as well based on those symptoms. But because it’s only one cylinder they say it’s probably more likely a spark plug. I haven’t really done any sort of troubleshooting yet because it’s been cold and snowing up here in Ohio but I suppose I’ll try every suggestion you folks have.

It’s more like a spark plug wire I mean. I’ve just changed all the plugs

Best coil packs for a 96 mystic cobra

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