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Driver side bank 1 completely lean...?

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Old 04-19-2009, 05:47 PM
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Default Driver side bank 1 completely lean...?
I just got new a new catback exhaust system buttoned up on my 408 LS2 engine...now all of a sudden the driver side bank A/F is completely lean....I replaced the 02s (tons of carbon on them) but engine is still backfiring...could I be overlooking something?...
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Old 04-19-2009, 09:15 PM
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Ground wires on the back of the head broke ?
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Old 04-19-2009, 10:21 PM
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I had the same problem, O2 sensor wires had touched the exhaust and melted. Grounded out the O2 sensor and ran way lean on that side.
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