C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Third O2 Sensor on a 95?

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Old Sep 29, 2008 | 01:35 PM
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Default Third O2 Sensor on a 95?

What does the third O2 sensor on a 95 do? I keep getting a code for a lean condition on the RH side O2 sensor and the car is loading up like the PCM is adding too much fuel. I could not find any codes published that relate to the second sensor on that side, so I'm wondering what the PCM uses it for.
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Old Sep 29, 2008 | 02:30 PM
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The third o2 sensor on the 94-95 cars is pretty much useless, and won't throw a code.
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Old Sep 29, 2008 | 09:42 PM
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Originally Posted by STL94LT1
The third o2 sensor on the 94-95 cars is pretty much useless, and won't throw a code.
Does that mean I can use the third one to swap out either of the primary ones, if bad, and save a few bucks?
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