Adam’s Service Tip: P0137 Oxygen Sensor Code
The problem child, a dirty 1998 Jeep Grand Cherokee 5.9 Limited with 166k miles. The victim, me. I had started the Jeep about a week ago and noticed that the MIL (Malfunction Indicator Lamp), commonly referred to as a check engine light, was on. It wasn’t running any differently that I could tell (key words […]