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o2 sensor

  1. O2 Sensor Replacement Issues

    Engine Topics
    I have a 81 elco with a 3.8 Liter V6, and I recently determined that the O2 sensor was the reason for the check engine light being on, but when I was finally able to get to the sensor the damn thing wouldn't budge. Is there any trick to getting it off? Its almost like the heat from the motor...