Quote:
Originally Posted by serialk11r
I am fairly sure the O2 sensors at the exhaust manifold always turn white from the heat, mine were that color when I took them out for replacement. Downstream after the main cat, it was black from soot.
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I would agree with this. IIRC, this is more or less what I saw when I replaced by O2 sensors a year and a half ago. My car is not LB capable, but...