02 Sensor wiring help - Jeep Wrangler Forum

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Old 04-24-2010, 10:56 AM   #1
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02 Sensor wiring help

In the process of replacing the O2 sensor in a 92 YJ 4.0 auto. Bought a direct replacement sensor with plug. Traced the sensor on the jeep and it is spliced into a harness near the intake manifold. None of the factory colors in the jeep harness will match to the new sensor and all the wires from the old sensor are white. Factory colors are grey, brown, black, and green. New o2 sensor colors are black, black, blue, white. If anyone has a suggestion please help. Thanks, Nathan
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Old 04-24-2010, 11:46 AM   #2
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Where did you get the sensor? Maybe its the wrong one. Mine's a few years newer but I have a connector near the sensor, surprised yours doesn't

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Old 04-24-2010, 12:32 PM   #3
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I got the sensor from parts plus, the only parts store that had the sensor. They also had a universal sensor that had the same color code but no factory plug for 20$ more. Whoever had the jeep before me did a pretty nasty splice job on the O2 sensor cable so now there are no plugs.
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Old 04-24-2010, 02:12 PM   #4
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Found the wiring diagram on ebay for universal O2 sensor wiring

eBay Guides - UNIVERSAL OXYGEN SENSOR INSTALLATION INSTRUCTIONS
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