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Codes 0171 and 0174
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02-23-2009, 05:12 PM
stick64
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Codes 0171 and 0174
These lean codes are popping up now on my 4.3 with 180k miles on it. Recently I changed out cat, fuel pressure regulator, and cleaned MAF sensor. Would any of these changes cause these codes to come up ? thx
stick64
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