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Check engine light

(1999 Oldsmobile Alero)
in Worcester, MA on May 02, 2011
we have a 99 Alero v6 and the check engine light come on with P0171 what is the most coo mun problem in these matter
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Popular Answer
on May 02, 2011
System too lean bank 1. Have diagnosed for proper repair. Is all a guess till diagnostics is done.
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