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Where is the O2 Sensor located on the 98 SL1 Saturn

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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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How to replace the oxygen sensor


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Please Help... p0404 and p0137 Error Codes (1999 Saturn SL1)


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1 Answer

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