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Oxygen Sensor Question

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Old 11-23-2003, 03:31 PM
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Oxygen Sensor Question
Does the sensor read during WOT or is it bypassed? I've heard different things from different people so far........
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Old 11-23-2003, 03:33 PM
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At large throttle openings, the ECU goes intot what is called "open loop mode"

In this mode, the ECU only relies on the MAF to calculate AF ratios. It does not read the O2 sensors.
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Old 11-23-2003, 03:34 PM
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So if I'm throwing a CEL for the o2 sensor only at WOT, should I be looking into the MAFS as well?
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Old 11-24-2003, 10:38 AM
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anyone?.......
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