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P0300 after LT header install

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Old 03-08-2016, 02:04 AM
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Default P0300 after LT header install
i picked up my trans am after getting headers installed i checked my check engine and it was P0300. The O2 sensors arent plugged in since the O2 Sensor Extension was missing i just ordered new ones could that be the cause
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Old 03-08-2016, 06:20 AM
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I would get the O2's connected first then see if the code continues. I also wouldn't run the car without the O2's.
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Old 03-08-2016, 09:42 AM
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Also check for damaged spark plugs (cracked ceramic).
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Old 03-09-2016, 09:20 AM
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Joecar with the good advice (again).
If you have access to a data logger you can scan the misfire by cylinder and help narrow down which cylinder to check
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