TBI sensors and running condition issues

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Dec 31, 2018 | 04:43 PM

#11

93FullsizeBlazer

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Quote:

Originally Posted by Tom A

The sensor is like a battery that sends a voltage to the ECU, based on how much oxygen is in the exhaust. Lots of O2 means lean mixture, no O2 means rich mixture. The ECU continually leans or richens the mixture based in feedback from the sensor. It should go back and forth between rich and lean, but stay pretty close to stoichiometric.

Oh Wow i just learned something new. I know enough about electricity to know it has to come from somewhere. So I looked it up. The 02 uses a chemical reaction to generate voltage that the computer reads. That’s interesting. I always thought the ecu sent the signal to the o2 and the sensor used a ground to adjust the voltage signal.