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o2 sensor

  1. General Isuzu Discussion
    Hello! I have a 1991 first gen Trooper LS, it has the 2.8 V6 GM engine with TBI. My dad bought this truck second hand many years ago, he passed away and now I´m taking care of it and trying to make it run as good and pretty as possible! This Trooper has always had terrible gas millage for many...
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