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View Full Version : O2 Sensor Voltage and other problems


Flybert
01-13-2005, 06:33 PM
Been running super rich on a fresh swap. Haven't even taken it out of the driveway. Trying to figure out why. BTW, it's an S13 SR Redtop with a narrow O2 sensor.

I turned the key to the ON position. Disconnected the plugs for the 02 sensor and checked the voltage at the female connecting points as well as continuity between white signal wire and ECU. There was continuity.

Brown = 12v
White = 23V
Black = ground

How is my ECU sending out 23V to the signal wire? Also, my O2 sensor has different color plugs, Black, Red, and White, but they are a in a different configuration.

They plug in like this.

brown - red (good)
white - black (bad?)
black - white (bad?)

I did not change around the pins on my engine harness. Should I switch them? Is this necessary? Also, I am not throwing any codes. If this thing wasn't working properly, wouldn't I throw a code?