Can anyone help me figure out the wiring on my Oxygen Sensor?? It is the 3 wire type and was replaced several years ago. I would like to install a new one, but cannot figure out what the deal is with the main wire (which I assume is heading into the Computer Control Unit). This main wire is a rather fat (approx. 3 mm diameter) bright GREEN wire. It is what I would describe as a "double wire" as it has a "core" of stranded copper filament wire, surrounded by insulation, and then ANOTHER LAYER of stranded copper filament wire SURROUNDING the inner wires insulation. Then whole thing is then insulated with the thick green insulation. The wire appears to me, to be a format typical to "shielded-type" cable... however I have never seen a shielded cable in a car before (I"ve seen it often in cable TV coaxial cables, and RJ-45 network cables which need the shielding from any external electromagnetic interference). Anyway, this fat green "double" wire has a connector crimped onto the middle "core" wire, which is at present, rather poorly wrapped around my existing Oxygen Sensor wire. And the outer "shielding" wire is simply peeled back, and taped up with electrical tape. I cannot imagine that this is the correct way to handle this. When I put my new O2 Sensor in, I would like to be certain that I am doing it absolutely correctly (as many of you already know... an O2 Sensor installed wrong, or not at all, will destroy your lovely catalytic converter within a few months of driving). The other 2 wires (I assume are the Oxygen Sensor heating wires) are white, and have a normal plug, and normal connector... so I have no problem with these. So... the question is: Does anyone know the function of the outer wire of the O2 Sensor to Control Unit wire? Does the OEM Oxygen Sensor come with a connector which uses BOTH of these parts of the fat green wire?? Thanks in advance for any help on this matter!! RSF <º)))>{ <º)))>{ <º)))>{ <º)))>{ <º)))>{ <º)))>{ Robert S. Fish Salzburg, Austria 1987 Wolfsburg Vanagon 2.1 Weekender 1987 Golf Cabriolet 1991 Golf |
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