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Old 03-25-2011, 12:37 AM   #1
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Default Wide band o2 sensor work with Autometer A/F gauge

I have an Autometer Ultra-lite Digital A/F ratio Gauge. Alot of People say they are basically useless with the stock Narrow band o2 sensor. So if I purchased and installed a Wideband o2 sensor would it make my a/f gauge read more acurate. It won't be so I can tune my car I just want a really accurate gauge so I can make sure I don't lean my car out and blow it up with my blower. Will this work? And how do I wire it up? For instance the narrow 02 is 4 wires. A wideband 02 is 6 wires. Where do I connect the other wires. I would instal the wideband 02 in the driver side long tube header since its the most likely to lean out first since its on the back side of fuel delivery. The fuel enters on passenger side. Thanks guys
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Old 03-26-2011, 03:22 PM   #2
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It won't work.

A narrow band O2 sensor contains an electrochemical Nernst cell that generates a voltage inversely proportional to the oxygen content of the gas in which it is immersed.

A wideband sensor contains a narrow band sensor and an electrochemical oxygen "pump" cell, and requires a microprocessor controller to function. The processor uses the output of the NB sensor to see if a sample of the exhaust gas (held in a small chamber) is rich or lean. It then adjust the voltage (level and polarity) and current to the pump cell to cause it to add or remove O2 from the sample chamber; until the NB sensor reports the sample as being stoichiometric; Lambda (λ) 1.0 or 14.7:1 AFR for gasoline.

Because the processor knows what voltage (of what polarity) and what current (for so long) was required to make the sample λ1.0 it also knows what the λ of the original sample was-and it generates a voltage output (often 0-5V) representative of the exhaust gas' original AFR.

There are wide band controllers that can output a 0-1V signal and drive a narrow band meter; the Innovate LC-1 can be programmed to do this, and there are others as well.
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