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#1
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97 ranger a/t 4.0 codes 171/174
have codes 171 and 174 lean bank 1 and 2.
o2 sensors? if so whichc ones and if not where should i be looking? thanks. chuck
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#2
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Re: 97 ranger a/t 4.0 codes 171/174
no O2 - this is both banks lean - look for any vacume leaks and clean the mass air flow sensor
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