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Before & After Cat O2 Sensors
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07-14-2005, 01:49 AM
Duke2.6
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Join Date: Mar 2003
Location: Southern California
Posts: 2,278
I can't offer any more insight on the O2 sensors other than what I previously mentioned. The second O2 sensor essentially monitors catalyst efficiency. As to why a new primary O2 sensor would correct an air injection fault, I have no idea.
Duke
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