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O2 sensor and catalyst efficiency, anti-seize use on O2 sensor
Posted 12 April 2004 - 10:00 PM
(1) Does this seem like it makes sense (rear O2 sensor likely going bad instead of the catalyst going bad), or at least a good first step? The CEL has not stayed on the entire time (it has gone out and back on twice on its own over a period of two months), and didn't go back on for about two weeks after I had reset it once with a scan tool seeming to indicate an intermittent failure instead of a continuous failure. (Same single catalyst code each time).
(2) When replacing a sensor, one of the manuals recommends removing the O2 sensor with the exhaust system still hot to take advantage of the looser expansion from the heat, and the factory manual says to use an anti-sieze on the new sensor. I often use some FelPro C5A copper anti-sieze on bolts and spark plugs, but am wary about using solvent-based compounds like this directly on sensors. Is this stuff OK, or are there special compounds to use on O2 sensors?
Posted 12 April 2004 - 10:04 PM
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