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Jeep Wrangler JK
JK General Discussion
Backfire / popping noise when started
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<blockquote data-quote="Jsholmes" data-source="post: 442304" data-attributes="member: 22384"><p>Being I replaced cracked stock exhaust manifold was Shorty headers would that make an 02 sensor not read correctly or bring to light they are bad? Is it possible the O2 sensors are bad or CC are bad causing p0300 code? Not understanding what’s happening as it was fine before tune up now the CEL flashes and that’s the code I’m getting</p></blockquote><p></p>
[QUOTE="Jsholmes, post: 442304, member: 22384"] Being I replaced cracked stock exhaust manifold was Shorty headers would that make an 02 sensor not read correctly or bring to light they are bad? Is it possible the O2 sensors are bad or CC are bad causing p0300 code? Not understanding what’s happening as it was fine before tune up now the CEL flashes and that’s the code I’m getting [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
Backfire / popping noise when started
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