Ignition Coil Connector Replacement

[bowzer.jl]

Jeep Wrangler 2018 JLU 2.0 Turbo
So my issue has been that my jeep would overheat when I’m idling or driving constantly at a low speed. My temporary fix was to rev my RPMs 3k + for a few secs and the temperature would go back down.

I changed out all 4 spark plugs, slot 1 and 4 Ignition coils, installed new thermostat, Heater Supply Hose & Tube, and filled the coolant reservoir (I’ll list all part numbers from Mopar). All replacement parts are Mopar as well.

The overheating issue has been resolved (it was resolved with the new thermostat, Heater Supply Hose & Tube, and filled the coolant reservoir tank). But while replacing the spark plugs (#4 unit), the connector that attaches to the ignition coil no longer snapped on so for about a month it was being held on by Electrical tape. During the install of the thermostat and heater supply hose, the clip was knocked off but just replaced back on the coil with tape. Although now the jeep is sputtering and vibrating while idling. The #4 ignition coil was replaced but didn’t resolve the issue. I did purchase a replacement clip through Mopar and hope that resolves my issue.

Two questions. Does anyone know how to replace the entire clip? (All videos etc are for JKs or other vehicles but none for JLs) and Could there be something else causing issues that I should be aware of?

Mopar Parts:
Spark Plugs
Product ID: 68292346AA
Gap size .025 inches or .6 mm

Ignition Coil - Mopar
Product ID: 68211953AA

Coolant Antifreeze
Product ID: 68163849AB

Thermostat And Housing - Mopar
Product ID: 05048424AD

Heater Supply Hose And Tube - Mopar
Product ID: 68280784AB

Coil Injector Repair Kit (Wiring)
Product ID: 68364262AB

Sponsored

 

[mwilk012]

That depends, what sort of tools do you have? If you have very small precision tools, or stiff wires, you can disassemble the connector and simply re-pin your wires onto the new plastic end. If not, you cut and solder the wiring harness. If you have to ask, you probably shouldn't do it though.

 

[alphawolff]

The above poster is correct. Cut, crimp, solder, and heat shrink the new connector. Make sure you keep the correct wires in each pin. You can cut the old connector off to verify wire color and position when building the new connector. You could also de-pin it and swap the wires directly to the new one, but it's kind of hard to de-pin these really small connectors without damaging the terminal.

That being said, unless you have a DTC for that cylinder the connector most likely isn't the problem. If the connector was unseating you'd get an insufficient ionization DTC along with the misfire DTC.

 

[bowzer.jl]

The above poster is correct. Cut, crimp, solder, and heat shrink the new connector. Make sure you keep the correct wires in each pin. You can cut the old connector off to verify wire color and position when building the new connector. You could also de-pin it and swap the wires directly to the new one, but it's kind of hard to de-pin these really small connectors without damaging the terminal.

That being said, unless you have a DTC for that cylinder the connector most likely isn't the problem. If the connector was unseating you'd get an insufficient ionization DTC along with the misfire DTC.

So I ran to autozone and it did point out cylinder 4 which to me made sense since that was the connector that was broken. And when I reset the connector with tape, the jeep ran perfect….until it didn’t. I watched a helpful video on popping out the metal pins and simply changing out the plastic clip part which would be the easiest route but I would rather change out the full thing just in case. I don’t have a lot of tools but I do have friends that do.

 

[alphawolff]

Yup, replace that pigtail.

 

[mwilk012]

Yup, replace that pigtail.

Lmao, gotta love when that secondary DTC is right there and the goobers at the part store won't even look at it. I had them sell a guy plugs and coils just the other day on a JK, he gave up when that didn't fix it, brought it to me and the second DTC was injector circuit open...

 

[bowzer.jl]

Lmao, gotta love when that secondary DTC is right there and the goobers at the part store won't even look at it. I had them sell a guy plugs and coils just the other day on a JK, he gave up when that didn't fix it, brought it to me and the second DTC was injector circuit open...

What happened in my case, when I installed all 4 new spark plugs, the connector to the 4th unit broke and wouldn’t clip. Quick fix at that time was to fasten it with tape. I completely forgot about that when I installed the new thermostat and heater tube so it knocked the connector loose. When I started the jeep up it started the sputtering and such which is when I just went to autozone (since it was late in the day already) and that’s when I saw it had something to do with that 4th unit. Looked at it again and remember the broke clip and just retapped it. When I did that, the jeep ran perfect. When I was making my way home, maybe 10-15 mins into driving is when the jeep started sputtering again and would stop when I released the gas. So the next day I picked up a new ignition coil for that 4th spot as well as the connector since of course the one I have needs to be replaced. I installed the ignition coil but now I need to wire in the new connector. I’m praying the new connector fixes this issue but I’m also trying to think ahead if it doesn’t, what else could be the issue. If you have any insight that would be appreciated!

 

[mwilk012]

What happened in my case, when I installed all 4 new spark plugs, the connector to the 4th unit broke and wouldn’t clip. Quick fix at that time was to fasten it with tape. I completely forgot about that when I installed the new thermostat and heater tube so it knocked the connector loose. When I started the jeep up it started the sputtering and such which is when I just went to autozone (since it was late in the day already) and that’s when I saw it had something to do with that 4th unit. Looked at it again and remember the broke clip and just retapped it. When I did that, the jeep ran perfect. When I was making my way home, maybe 10-15 mins into driving is when the jeep started sputtering again and would stop when I released the gas. So the next day I picked up a new ignition coil for that 4th spot as well as the connector since of course the one I have needs to be replaced. I installed the ignition coil but now I need to wire in the new connector. I’m praying the new connector fixes this issue but I’m also trying to think ahead if it doesn’t, what else could be the issue. If you have any insight that would be appreciated!

No worries, that is the issue.

 

[bowzer.jl]

No worries, that is the issue.

I’m curious because I’ve been looking for a video, specifically for someone working on a JL, that’s a “How To”. I am capable of doing the job myself but having a video to walk me through step by step would be extremely helpful. Are you aware of any videos that shows how to do the rewiring? The kit I bought from Mopar came with 6 wires (3 white and 3 blue) but the connector is only 3 pins. I’m sure once I open it up I’ll see what wire goes where but are you more familiar with doing this?

 

[mwilk012]

Very familiar. Do you own a soldering iron?

 

[bowzer.jl]

Very familiar. Do you own a soldering iron?

I don’t but I can get one (I’ve been meaning to buy one for myself or I can always borrow one)

 

[bowzer.jl]

Updating this Thread!!!
I cut off the old connector to the 4th cylinder and when I shook it, there was a rattling noise so clearly something broke off in the connector itself! I reconnected with new wires and new connector and Jeep Runs like a CHAMP!! I do really appreciate anyone who commented and I hope this fix helps others!

 

[Dellromero]

Jeep Wrangler 2018 JLU 2.0 Turbo
So my issue has been that my jeep would overheat when I’m idling or driving constantly at a low speed. My temporary fix was to rev my RPMs 3k + for a few secs and the temperature would go back down.

I changed out all 4 spark plugs, slot 1 and 4 Ignition coils, installed new thermostat, Heater Supply Hose & Tube, and filled the coolant reservoir (I’ll list all part numbers from Mopar). All replacement parts are Mopar as well.

The overheating issue has been resolved (it was resolved with the new thermostat, Heater Supply Hose & Tube, and filled the coolant reservoir tank). But while replacing the spark plugs (#4 unit), the connector that attaches to the ignition coil no longer snapped on so for about a month it was being held on by Electrical tape. During the install of the thermostat and heater supply hose, the clip was knocked off but just replaced back on the coil with tape. Although now the jeep is sputtering and vibrating while idling. The #4 ignition coil was replaced but didn’t resolve the issue. I did purchase a replacement clip through Mopar and hope that resolves my issue.

Two questions. Does anyone know how to replace the entire clip? (All videos etc are for JKs or other vehicles but none for JLs) and Could there be something else causing issues that I should be aware of?

Mopar Parts:
Spark Plugs
Product ID: 68292346AA
Gap size .025 inches or .6 mm

Ignition Coil - Mopar
Product ID: 68211953AA

Coolant Antifreeze
Product ID: 68163849AB

Thermostat And Housing - Mopar
Product ID: 05048424AD

Heater Supply Hose And Tube - Mopar
Product ID: 68280784AB

Coil Injector Repair Kit (Wiring)
Product ID: 68364262AB

That coil pack repair kit is $200 canadian. If anyone is looking to replace the connector. Search amazon for WMAutoPart Parking Aid Sensor Connector Wiring Harnesses 5183453AB It's basically the same thing. Do not over pay for that repair kit. I just spent $22 canadian for that part. Just a heads up for anyone that needs it.

 

[Dellromero]

 

[mwilk012]

S2316 is the part number for a Standard Motor Products wiring connector you can pick up at your local oreillys right now for $15.

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