how many o2 sensors does a 99 chevy s10 4wd have and where are they located

Asked by Sep 23, 2016 at 02:18 PM about the 1999 Chevrolet S-10 3 Dr LS Wide Stance 4WD Extended Cab SB

Question type: Maintenance & Repair

1 Answer

20,015

They are mounted before and after the Catalytic Converter. If its a 4 cylinder it will have one or two before Catalytic Converter in exhaust manifold and one after the Catalytic Converter in exhaust pipe. If its the 4.3L V-6, there will be 2 before Catalytic Converter in the exhaust manifolds since there is two manifolds, one each side of engine there is two and also after the Catalytic Converter there is another one in the exhaust pipe

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