O2 sensor replacement-one or both?
06-24-2004, 03:20 PM
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O2 sensor replacement-one or both?
Does the rear one go bad over time like the front one or is it pretty much good for the life of the car?
06-24-2004, 03:30 PM
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The only thing the rear one does is tell you the cat is working. Dont bother replacing it until you get a code about it. It does nothing for your performance or mpg or anything like that.
06-24-2004, 08:28 PM
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The front one is enough as Rogue stated. You can get a rear O2 spoof which is much cheaper than an actual sensor, also needed when going to a high flow cat.
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