Thread: Code P0171 system lean
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Old 06-29-2010, 04:14 PM
Mickey#1 Mickey#1 is offline
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Re: Code P0171 system lean
Vacuum is highest at idle & so are your fuel trims. This leads me to believe that you do have a vacuum leak. I'm going to go scan my Bonneville & see what I get for the MAF sensor readings. I'll report back shortly.
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