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Re: P0171 DTC - sys too lean (Bank 1)
Quote:
Originally Posted by 68C15
have you ever ran E85? it attacks the "rubber" on the intake gaskets.
what are your long term and short term fuel trims at both idle and 2000 RPM for both banks? I suspect that bank 2 is getting close to setting a P0174. I would also look at the missfire data stream
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I'm going to show my ignorance here...what is E85? I haven't had the fuel trims checked. I don't have a way of doing that myself. I'm just a simple guy that can do mechanicing with normal tools. That's why I'm prodding you all for information.
Thank you for your help.
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1999 Chevrolet Silverado 1500 extended cab, short bed. 5.3L automatic.
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