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p0171 code both cars

 
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petermeridingo76
Resident
Resident
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Joined: Mar 21, 2009
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Location: FELTS MILLS, NY

2005 Chevrolet Impala
2008 Chevrolet Impala


PostPosted: Thu Oct 10, 2013 7:28 pm    Post subject:  p0171 code both cars Reply with quote

hey wassup guys, its been a while. just need some help. I have a 2000 impala and 2005 ss both cars reading a p0171 code. the 2000 i have been working on ever since i came back from deployment in july, purchased the ss when i was away , new motor only 12k on it. but anyway i read my LTFT and its reading 16.4% in which is maxed out and that is why the code comes up. just wondering what to look for. i know vacuum leaks, clean maf , pvc, lower and upper intake gasket. i hav checked everything. any other advice would be great. Confused

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98ss
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Joined: Jun 06, 2009
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Location: Ann Arbor

2002 Chevrolet Impala
2011 Chevrolet Silverado


PostPosted: Thu Oct 10, 2013 9:26 pm    Post subject:   Reply with quote

Did you check any of the fuel items? The fuel pump could be weak, the fuel filter clogged, the fpr could be stuck.
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