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o2 sensor voltage
Hi, I have a big question, usually with o2 sensors when the mixture is rich due to lower voltage (I think this is correct)
but today I passed a rarity.
I measured the black wire probe (zirconium narrowband) and idling black cord gave a signal of 0.55 volts (no hho) and slightly accelerating voltage is 0.1 to 0.85 volts.
My surprise was to turn the generator hho (presumably then the voltage should drop, to be rich) but the opposite happened with hho the voltage has risen to 1.2 volts, and we are supposed to assemble efie to increase the voltage of the signal for mixture seems rich, and seems to be quite the opposite, I have placed an o2 extender and the maximum voltage of 1.12 volts has been (pieso following high).
the engine is a 1.8 liter audi a3 automatic with one o2 sensor before the catalyst.
How can this be?
Views: 35
Replies to This Discussion
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Permalink Reply by Mike Walsh on -
First off...Are you sure the black wire is indeed the signal wire for your sensor? Most sensors use two black wires for the heater circuit.
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HODINFO SPONSORPermalink Reply by javier sanchez on -
Yes, black is the signal cable, the sensor has 4 wires.
white one is 12 volts to heat the sensor.
gray is negative one for heating the sensor.
another target that is voltage ecu.
and black is the signal to the ecu
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