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Is the upstream O2 sensor a wideband or narrowband?

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Old 05-23-2013, 02:14 PM
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Is the upstream O2 sensor a wideband or narrowband?
Just curious. I thought newer cars use wideband sensors, but someone at my shop (who probably doesn't know a hell of a lot about the RX-8 specifically) said it's a narrowband sensor. I'd like to know which it is, so I can anticipate the cost of eventually replacing it.
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Old 05-23-2013, 02:15 PM
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Most cars have both as narrow band.

The RX-8 has a wideband in the front, a narrow band in the rear.
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Old 05-23-2013, 02:43 PM
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I thought that might be the case. So, how many hundreds of dollars does a replacement upstream sensor cost?
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Old 05-23-2013, 02:46 PM
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Depends on where you buy it

And no, I'm not going to go price shopping for you.
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