1999 Jeep Wrangler TJ P0351 Code: Stalling and Starting Issues After Removing Coil Wire
My 1999 Jeep TJ Sport with a 4.0L engine and automatic transmission occasionally trips the P0351 fault code, which indicates a misfire due to a faulty spark plug coil. When this happens, the vehicle will either stall or fail to start altogether. The only workaround I've found is to go outside and manually remove the coil wire from the distributor cap, crank the engine over, then reinsert the wire. After that, the Jeep starts reliably. This issue doesn't occur consistently—only intermittently—but it's becoming increasingly frustrating. I'm looking for a permanent fix or diagnostic guidance. Thanks, David Camarra
The P0351 code points to a spark coil issue in the ignition system. Given that your Jeep is a 1999 TJ, it's worth replacing the distributor cap, rotor, and spark plug coils as these components are common failure points. Note: A full inspection and replacement may cost more than just repair—consider this before proceeding. If the problem persists after replacing these parts: - Use an OBD2 scanner to retrieve all fault codes (some may not appear when the engine is off or during idle). - Check spark at each plug using a spark tester. - Inspect distributor rotation and ensure proper contact between cap and rotor. - Verify that the coil wire harness connections are secure, free from corrosion, and properly seated. - Test the secondary resistance of the coil (especially the coil-to-distributor connection) to confirm integrity.