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There are three O2 Sensors on my 1999 Cougar. Two are located just before the Y-Pipe and are both wired to the drivers side of the Y-Pipe. The other is located just after the Catalyic Converter.

Easy to change.

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โˆ™ 2009-11-23 19:27:58
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Q: Where are the oxygen sensors located on a 1999 Mercury Cougar?
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