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O2 sensor ?

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Old 08-07-07, 10:17 PM
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O2 sensor ?
My car does not have the O2 sensor hooked up but my car runs fine. Should I hook it up or leave it alone? The wire is just hanging there.
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Old 08-08-07, 12:21 AM
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If I understand correctly not having it hooked up will hurt your gas mileage. It would prevent the ECU from going into closed-loop mode.
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