Re: P0053, now P0171 and P0174
I agree for sure. But if the old sensors were not working they "should" have set p1133 p1153 codes possibly for insufficient switching, not always the case though. Def need to install old sensors and see what happens
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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