I have a 2012 Wrangler Sahara Unlimited. 109,000 miles. Beginning in January I got a P0302 misfire code. Jeep running great, but got a code. Changed all 6 spark plugs. About 3 days later the engine light came back on with a P0304 code. Took to dealer. They replaced the left cylinder head and the 2,4, and 6 coils under warranty. Ran for 5 days or so and threw another code. P0306. At this point I replaced all 6 fuel injectors. Threw another misfire code a few days later. I'm stumped. The codes are always on the 2,4, or 6 side. Jeep has run great the whole time. Fuel economy is normal. The code seems to always come on while idling right after starting it up. It has never come on while actually driving. Any suggestions would help. Thanks
2012 Wrangler Sahara Unlimited Misfires
- Thread starter dgoffena
- Start date
I would say possibly a problem with a connection for the wiring harness to that side, possibly a wire or two that could be going to ground. I heard something about the way the wire harness was ran it causes a problem.
First thing I'd be doing is inspecting the wiring harness and grounds. Very, very thoroughly.