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<font color='#000000'>what does an exhaust oxygen sensor do for the car?
I found one for my  3sfe engine but I was just curious about what they do for the car...</font>
 

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<font color='#000F22'>they will measure the cars air fuel mixture, send the data back to the computer and the computer will adjust it to make the car run they way they designed it to.</font>
 

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<font color='#000000'>When you have a bad one you will get bad gas mileage and your fuel will run rich.</font>
 
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