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  1. M

    124 and 157 OBD1 codes

    I have a 1994 Explorer, stock. Seems to have all original components because they all have the Ford emblem and stock numbers on them. A year and a half ago, it had the CEL on. Checked codes and they were all indicating a bad EGR. The EGR as fairly new so I checked the EGR control module and...
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