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Recent content by jeep4ever

  1. J

    Check engine light P0137

    Maybe a need to pull the battery cable off to let it re-calibrate?
  2. J

    Check engine light P0137

    Thanks, I will check wiring/connector again and report back. I guess there is always a chance the new O2 sensor is bad. I would think not likely though.
  3. J

    Check engine light P0137

    OK, 1999 Cherokee Classic with 85k miles. All stock. Real nice shape but keeps posting a check engine with a P0137 on my OBD2 scanner. Replaced downstream O2 sensor. Checked vacuum lines. Checked O2 fuse. Checked both O2 sensor connections for corrosion. Reseated MAP sensor connector and cleaned...
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