Volvo AWD 850 Forum

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IDENTIFYING OXY SENSOR WIRES 850 1996

Hello. I have a 2.3L with a bad o.s. My question is when I buy a sensor that I connect the original plug to, if the original wiring is gray, black , white white and the new o.s. is gray, black , black, white, how do I hook up the plug correctly? Can you tell with a multimeter which are the pre-heat wires and which are the feedback wires? Thanks.







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