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99 two codes
My sons 99 3.0 liter has no codes til yesterday. He changed air filter then seems like right after that the codes po171, and po174 were there. My code reader says system to lean bank 1 then other says same but bank 2. Was wondering if mass air flow since changed filter but was careful didnt drop etc.It seems to run almost perfect but with gas prices i want perfect.. thanks DAVE
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