Oxygen sensor.....
That sensor is the post-cat sensor, which the ECU reads to determine how well your catalytic converter is working. Sensor 1 is the one that is used to determine fuel mixture, and so is the more important of the two when talking about driveability. If you have smog testing coming up, you need to replace it, but if you're just driving for awhile and don't have to worry about an emissions check, you should be OK. I wouldn't wait too long though.
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drft1
Archive - Engine/Performance Parts
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Jul 5, 2010 12:18 PM
spiney
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Jul 15, 2009 10:18 AM



