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Old 06-05-2013, 10:12 PM   #1
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Spark Plug Wires

Did a tune up not too long ago. Put NGK plugs, new rotor, cap, and wires. I just changed out the wires I bought from an auto parts store to OEM Mopar wires, because I heard from some of our more experienced jeepers that there is no comparison whatsoever and that OEM are way superior. Well, I totally agree. MyTJ is running so much smoother at idle and seems to have more power. Thanks for the info. It totally matters in this case.

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Old 06-06-2013, 12:21 AM   #2
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Good decision, it's real tough to beat the OE Mopar ignition wiring.

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Old 06-06-2013, 12:33 AM   #3
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Originally Posted by TJfunrun View Post
Did a tune up not too long ago. Put NGK plugs, new rotor, cap, and wires. I just changed out the wires I bought from an auto parts store to OEM Mopar wires, because I heard from some of our more experienced jeepers that there is no comparison whatsoever and that OEM are way superior. Well, I totally agree. MyTJ is running so much smoother at idle and seems to have more power. Thanks for the info. It totally matters in this case.
Do you by chance have the part number for the OEM Mopar Wires?
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Old 06-06-2013, 07:12 AM   #4
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Depending on how long it's been since last tune up on vehicle and what kind of driving it's had, ANY set of plugs and wires would've been a massive improvement!

Have never had any luck with NGK plugs. Give me the good ol' Champions!!
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Old 06-06-2013, 09:03 AM   #5
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So far so good on the NGK plugs. I chose to go with regular plugs instead of the longer lasting types. The tune up didn't effect the performance of my TJ that much even though the rotor,cap, and plugs were pretty worn. That kind of amazed me. The wires however...

The part number for the Mopar plug wires is: 5017059 AB CABLE PKG IGNIT 8036001. Gave you all the #'s on my invoice. The first ones are the p/n i believe. They weren't cheap ($54.00) but I wasn't expecting them to be. But what a difference over the cheaper wires. Live and learn, but thanks to the forum members for the recommendation.
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Old 06-06-2013, 12:11 PM   #6
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Originally Posted by TJfunrun View Post
So far so good on the NGK plugs. I chose to go with regular plugs instead of the longer lasting types. The tune up didn't effect the performance of my TJ that much even though the rotor,cap, and plugs were pretty worn. That kind of amazed me. The wires however...

The part number for the Mopar plug wires is: 5017059 AB CABLE PKG IGNIT 8036001. Gave you all the #'s on my invoice. The first ones are the p/n i believe. They weren't cheap ($54.00) but I wasn't expecting them to be. But what a difference over the cheaper wires. Live and learn, but thanks to the forum members for the recommendation.
Thanks man!
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Old 06-06-2013, 12:40 PM   #7
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Hope it helps.
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Old 06-21-2013, 07:06 AM   #8
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TJfunrun, Just found this thread. I'm thinking of replacing my wires as well. How long and hard was it to replace your wires. Never done it on any vehicle and I have a rough idle so I thought I could try this fix. 130,xxx miles prob would be a good point to replace them at.

Thanks!!!
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Old 06-21-2013, 09:34 AM   #9
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Spark Plug Wires

I had all day, but it only took me a couple hours to change oil and filter, air cleaner, spark plugs, distributor cap, rotor, and plug wires. It was my first time wrenching on my first Jeep (stock 99 TJ with 72,000 miles) so I was pretty methodical about it. I removed the two sets of plastic clips that help route the wires from distributor cap to plugs. Don't think it's necessary now, but it opened things up a bit. I don't have AC so that didn't obstruct me. I took a couple of pics on my smartphone so I could route the new wires as before. I also made a sketch of the distributor cap so I could repeat which wire went to each plug (years ago I messed that up and it was a joke to figure it out). Make sure you gap the plugs to the correct gap. I set mine at .035. Don't forget to torque the plugs to specs. My service manual says 26-30 ft./lbs. I believe I set mine to 28. The switch to Mopar wires seemed critical as the Jeep ran better as a result. They're pricey, but what isn't these days? The amazing thing about this Jeep is that it was getting 18-20 mpg with fouled plugs (wide gaps) and rotor and cap. It's doing the same thing now, but running smoother with more power. The only thing that was strange is not to have a way to set timing, but after reading a bit in my manual, that's another task that for me is best done by someone with more knowledge and ability. But for now all is well. Hope you have a good experience.
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Old 06-21-2013, 09:37 AM   #10
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The engine timing is under control of and set by the PCM (engine computer). Rotating the distributor as we used to do doesn't change the timing any more. Nice job getting it running smoothly again!
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Old 06-21-2013, 09:54 AM   #11
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Thanks, Jerry. I thought it was something that had to do with the PCM (computer). If I sounded ignorant its because the TJ is the first vehicle I've owned since a 73 Blazer that I can actually see, let alone change the plugs, etc. It's nice to be able to actually do some of your own work on a vehicle again!
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Old 06-21-2013, 09:55 AM   #12
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I went with a full borg - warner system from the ignition coil all th way through the wires and topped it off with champion copper plugs. That has always worked best for me. The OE stuff is just too overpriced for what you get. Now, if the wires were made of pure gold and gave me 35 mpg I might consider them....
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Old 06-21-2013, 10:09 AM   #13
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Hey, if you start getting 35 mpg's we'll all be switching! Nice knowing there are other options. I just went with what was more familiar to me. The Jeep, I'm sure, will continue to freely spend my $ whether OEM or not! Thanks

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