koda2000
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Two things I recently learned about O2 sensors and how they work.
1) An O2 sensor needs an open path to atmosphere. It needs this external oxygen source to be able to use as a reference. It draws in external O2 through its wiring jacket and electrical connector. If you pack your O2's electrical connector with dielectric grease the sensor can not sample any external O2 and has nothing to compare what it's reading to. This will result in erroneous data being sent back to the PCM, which will adversely effect fuel trims.
2) O2 sensors do not require power to operate (other than for 4-wire heated O2 sensors). Once they heat up they actually generate the own electricity.
This was all news to me and I typically do pack my electrical connectors with dielectric grease. Interesting. Learn something new every day.
1) An O2 sensor needs an open path to atmosphere. It needs this external oxygen source to be able to use as a reference. It draws in external O2 through its wiring jacket and electrical connector. If you pack your O2's electrical connector with dielectric grease the sensor can not sample any external O2 and has nothing to compare what it's reading to. This will result in erroneous data being sent back to the PCM, which will adversely effect fuel trims.
2) O2 sensors do not require power to operate (other than for 4-wire heated O2 sensors). Once they heat up they actually generate the own electricity.
This was all news to me and I typically do pack my electrical connectors with dielectric grease. Interesting. Learn something new every day.