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02 sensor

Discussion in 'Technical Questions?' started by Joey Jolly, May 22, 2019.

  1. Joey Jolly

    Joey Jolly I'm NEW... What now?

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    Where do I put the o2 sensors gonna cut and dump out the fender 5.3, 96 mm turbo.. 94 obs
     
  2. kennythewelder

    kennythewelder B31-3 (6 G ) certified

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    Thats not realy enough info to help you. Is it a Chevy, Ford, or what. If Chevy, then why 5.3. Did you do an engine swap. Here is how o2 sensors work. The front sensor, or sensors read the amount of oxygen in the exhaust, and adjust the amount of fuel the engine needs by demand. The rear sensors compare the amount of oxygen in the fuel looking for a difference between the front sensors. This tells the ECM that the cats are doing there job. Thats the bassics anyway.
     

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