Autozone has them cheap. It is mounted on the side of the engine next to the distributor. A 13mm wrench and a flat blade screwdriver, and one beer is all you'll need. Simple replacement job. They do wear out. This is all assuming you have the six cylinder. If you have the four cylinder it's a three beer job.
A forum community dedicated to Jeep Wrangler owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, engine swaps, troubleshooting, suspension, maintenance, and more!