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Old 03-13-2003, 10:32 AM
sbourg sbourg is offline
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Join Date: Jul 2001
Location: SoCal
Posts: 1,303
If your O2 sensor has failed, you will be running open-loop. Likely your pre-cat HC emissions are very high, and the cat is sucking it all up, consuming its 9 lives rapidly. Save the cat and fix the problem - O2 sensors are much cheaper.

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