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Located under the passenger side of the car in the exhaust pipe before the catalitic convertor. The wires go through the transmission tunnel and into the loom under the passengers foot well. There is a plastic relay cover panel under the front passengers carpet, remove this to locate the 4 wire connector for the O2 sensor.

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โˆ™ 2015-07-15 21:11:22
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Q: How do you change the oxygen sensor on 1988 Mercedes 190 E 23?
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