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Jeep Wrangler JK
JK General Discussion
P0301 misfire
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<blockquote data-quote="JimNH" data-source="post: 436365" data-attributes="member: 18470"><p>I just went through this - see my other post. I replace plugs, wires, and coil pack, and the P0300 code (general misfire) went away, but i got a code showing fuel injector circuit on no. 2. I replace the fuel injector with a remanufactured OEM injector and solved it - but I also read that for general misfire, you might look at changing the crankshaft (not camshaft) position sensor - easy and about $20 so why not. Also, check the wiring harness to the injectors for any cuts, or loose connections at the injectors, etc. (break and remake all the connections) Also, for general misfire, check the ground for the computer module - mine were corroded and I cleaned them up.</p><p></p><p></p><p>[URL unfurl="true"]https://wranglerjkforum.net/threads/advice-needed-with-check-engine-light.28534/[/URL]</p></blockquote><p></p>
[QUOTE="JimNH, post: 436365, member: 18470"] I just went through this - see my other post. I replace plugs, wires, and coil pack, and the P0300 code (general misfire) went away, but i got a code showing fuel injector circuit on no. 2. I replace the fuel injector with a remanufactured OEM injector and solved it - but I also read that for general misfire, you might look at changing the crankshaft (not camshaft) position sensor - easy and about $20 so why not. Also, check the wiring harness to the injectors for any cuts, or loose connections at the injectors, etc. (break and remake all the connections) Also, for general misfire, check the ground for the computer module - mine were corroded and I cleaned them up. [URL unfurl="true"]https://wranglerjkforum.net/threads/advice-needed-with-check-engine-light.28534/[/URL] [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
P0301 misfire
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