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02 sensor issue really confusing me.... 700

posted by  Will740turbo on  Sun Nov 28 14:22 CST 2010
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last visit: Wed Oct 22 16:09 CST 2014
[RELATED]

Bingo. Sounds like you've got a problem with the wiring from the O2 sensor to the ECU. Potentially there's an issue with the ECU, but let's not go there yet.

Does anyone know the pinout from the ECU to the O2 sensor?

I suppose you can test (engine off) for resistance between the O2 sensor connector in the wiring harness (not the lead) and the ground. It should be anything but 0.


--
1990 740 Turbo, on its way to stock specs, maybe beyond






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