Question about 1998 Saturn SL
There are two O2 sensors. One is for the computer to control the Air/Fuel ratio mixture and one is for the catalytic converter. The one for the catalytic converter tells the computer nothing more than if the cat. con. is working properly.
The major O2 sensor you are probably looking for is on the exhaust manifold just below where all 4 cylinders meet into one pipe. It has a wire going to it and it sticks out of the exhaust a good ways, it's hard to miss.
Posted on Feb 04, 2010
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Posted on Jan 02, 2017
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