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there are two of them one is one the header if front of the engine behind the radiator the other is on the top side of the catalytic convertor this is the one that usually goes bad it is like a spark plug with wires on it un plug the wires then unscrew the sensor put in the new one and plug it up

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โˆ™ 2011-09-20 09:57:20
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Q: How do you replace the o2 sensor in your 1998 jetta?
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