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2003 Cadillac DeVille DTS

Question: Car is idling rough, keep giving me code saying it is running lean. One time it

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ldehaven, Pimento, IN, October 07, 2011, 04:53
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reads bank 1 sensor, next time it reads bank 2 sensor. I put injector fluid in it and a new gas cap. What should I do next? Thanks

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  • Answer #1

    Jim Taddei October 10, 2011, 15:11
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    I would guess that both banks are running lean on your 2003 Cadillac DeVille - they are probably right at the threshold required to set the trouble code, which ever side happens to pass the threshold at any given time will set the code. Is not uncommon for the rubber on the intake plenum duct to crack causing the symptoms your are describing.

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    ldehaven, October 11, 2011, 04:58
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    Thanks!

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