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Re: What's the best instrument to test an O2 sensor?
Posted to Emissions Forum on 12/29/1998 2 Replies

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You're assuming I'm working on OBD2 vehicles, Jim. Only one of the vehicles was a GM and it was carbureted (no fuel trim, though M/C dwell did show a low reading of around 15 degrees as the ECM correc... Login to read more.

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