07 Sebring 2.4L PO302 and PO300 codes
Hello there im new to the Chrysler world so I need a little help here. I fix all my own vehicles. SO FAR ! Im pretty mechanically inclined but I havnt owned a mopar product since my old beater of a chrysler new port back in the 80s. I just bought an 07 sebring with a 2.4L engine and im pulling PO300 and PO302 codes. I know what they mean but Im not sure where to start. I know checking the plugs and wires is the easiest and cheapest but then what? one more thing I might add is the dealership soaked the engine down with water while cleaning the engine. I looked for maybe a wire got knocked of somewhere but I havnt found anything yet. Any info would be greatly appreciated! Thank you in advance.
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Is it really misfiring or are the codes just there? It could be that after they soaked down the engine it misfired a bit until it warmed up and then dried out and ran ok, but the codes are still there. If it's actually misfiring, it's related to cylinder #2 so ckeck the plug and wiring there first very carefully. A little rust on a connector could be affecting the spark. If you're sure the spark is good, it could be fuel injector related. Start with the injector wiring.
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it is still miss firing so your plan of attack will be my morning plans for tomorrow. Thanks for the info.
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Well, assuming the 2.4L uses coil-on-plug, there are only two things you can replace to fix this problem. The spark plugs, and the coils. If the problem still persists, there might be a compression problem of some sort, or maybe oil is leaking into the cylinder causing the plugs to misfire. If it's the latter, you would know once you changed the plugs.
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Fixed! It was a bad plug and a bad coil. Thanks for the info
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