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Old 07-08-2003, 12:52 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
No, the front O2 sensor monitors the amount of oxygen before the catalyst & then the computer adjusts the fuel mixture.
The rear sensor monitors the oxygen after the catalyst & that info goes to the DME for long-term catalyst info.
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