Thread: 1991 w150
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Old 10-05-2004, 11:50 AM   #1
2000mudder
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1991 w150

i just bought a 91 w150 4x4 w/a 318 auto trans.dose anyone know the location of the oxeygen sensor. not in manifolds or y-pipe anywhere i can see. just a tube off back of each manifold that goes behind motor somewhere. its running rich so i would like to find this and replace it.not sure if original y-pipe. previous owner might have eliminated sensor???
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