What You Will Need
• Coil Rail - Part# GPS245296
• 13mm Socket
• Ratchet
• Inch Lb. Torque Wrench
• 6 " Drive Extension
• Flathead Screwdriver

2000-06 Jeep TJ Wrangler Coil Rail Replacement

Unlike older Jeep's that have a distributor and individual wires that connect to each spark plug on your engine, Jeep TJ Wranglers made between 2000-06 were built with no distributor and have a one piece spark or coil rail assembly that contains 3 coil packs that are built right into it. The upside to this is that there are fewer parts to deal with and it's super easy to replace, but the down side is, it'll cost you $120 or more to replace. In any case, this write-up will walk you through what you will need to get and do to perform this easy 10min maintenance job.

This is a pic of what your new Jeep TJ Wrangler's coil rail will look like. As you can see, the entire unit is self contained and comes as a single assembly.
1. Disconnect the negative lead on your batter and then, using a flathead screwdriver, loosen the clamp securing your air intake tube to your air cleaner box. 2. Again, using a flathead screwdriver, loosen the clamp securing your air tube to your engine's throttle body. 3. Disconnect the CCV tube from its connection on your Jeep's air intake tube.
4. Detach your Jeep's air intake tube from the air cleaner box and throttle body and remove it from your engine compartment. 5. Using a 13mm socket and a ratchet drive extension, remove the 4 bolts securing your Jeep's coil rail to the engine. 6. Carefully disconnect the rubber boots off your Jeep's spark plugs, pull the entire coil rail off your engine and then position it in a way that you can gain access to the wiring harness plug on the end closest to the firewall.
7. In order to disconnect the wiring harness plug on your Jeep's coil rail, you will first need to slide the red locking tab outward. This can be tough to do but try not to use tools at you can break this tab very easily. 8. The wiring harness plug has a secondary release lock tab that will need to be depressed as you pull it off. The pic above is of the connecting plug after the coil rail has been disconnected to show you what to look for. 9. With all the bolts removed and the wiring harness disconnected, carefully remove your Jeep's coil rail out from the engine compartment.
10. Apply some Dielectric Grease to the connection points on your Jeep's spark plugs. 11. Carefully slide in and position your new coil rail in your Jeep's engine compartment, plug it into the wiring harness and then lock it into place by pushing the red slide tab back in place. 12. Re-attach your new coil rail onto your Jeep's spark plugs, make sure that each boot is in fact connected to the spark plugs and then press it firmly in place.
13. Secure your Jeep's coil rail to your engine using the factory bolts. Tighten the bolts to 250 in. lbs. of torque.

14. Reconnect you Jeep's air intake tube to the throttle body, CCV and air cleaner box and make sure to fasten them in place by tightening the clamps with a flathead screwdriver.

That should be it, you've just replaced your Jeep's coil rail and yes, it really was that simple. Please email me with any questions you might have.

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