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Old 05-30-2013, 12:42 PM   #1
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O2 Sensor Problem

So my YJ has the check maintenance light on. we know the O2 sensor is causing it. the problem is the sensor had ports for 4 wires and we have 3 wires that have been cut in the proximity of the O2 Sensor. Does anybody have a decent wiring schematic for it?

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Old 05-30-2013, 01:44 PM   #2
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no schematic... but, check your donut gasket where the manifold and pipe come together. If bad, it will be a little noisy under the hood and will also throw a bad reading to the o2 sensor. I was able to tighten mine back up and my o2 readings cleared.
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