5.3 P0300 after header install
03-25-2014, 05:53 PM
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Alright well I flipped the front and rear o2 sensors on the passenger side as a temporary solution.
The codes immediately went away and idled and ran perfect! I've never seen such a drastic change in fuel economy before. Feels great to know my engine is gonna be ok lol. Thanks for the input!
The codes immediately went away and idled and ran perfect! I've never seen such a drastic change in fuel economy before. Feels great to know my engine is gonna be ok lol. Thanks for the input!
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