S2000 Engine Management Engine management topics, map and advice.

AFR reading is low

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Old 09-19-2010, 10:03 AM
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With the sensor unhooked you should see 4 volts
Old 09-23-2010, 04:04 PM
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It the afr setting was on methanol...
Old 09-24-2010, 06:11 AM
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Originally Posted by wadzii,Sep 19 2010, 02:03 PM
With the sensor unhooked you should see 4 volts
the 30-4100 should read 2.35V when unhooked... are there any previous versions that should read 4???
Old 09-24-2010, 06:21 AM
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I had it backwards.. you are correct

the gauge type should read 2.35 when unhooked, the external non gauge and internal wideband controllers output 4 volts when the sensor is unhooked.
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