How do you change O2 sensors on a 95 Jeep YJ 4.0L?

Answer 1

FIRST MAKE SURE YOU ONLY PURCHASE THE REPLACEMENT O2 SENSORS FROM YOUR LOCAL Jeep DEALER. DO NOT PURCHASE AFTERMARKET O2 SENSORS FROM AUTOZONE,ADVANCE AUTO PARTS, MAIN,NAPA OR ANY PLACE OTHER THAN A DEALERSHIP PARTS COUNTER. UNLESS YOU WANT TO DO THE JOB AGAIN IN ABOUT 2-4 WEEKS. YOU WILL ALSO NEED A SPECIALTY TOOL WHICH I WOULD RECOMMEND THAT YOU PURCHASE AT ONE OF THE AFTERMARKETS SHOPS AS IT MOST LIKLY WILL NOT GET A LOT OF USE FROM THE AVERAGE PERSON. IT LOOKS LIKE A DEEPWELL SOCKET, WITH A LARGE SECTION CUT OUT ON ONE SIDE FOR THE WIRES ON THE O2 SENSORS TO STICK OUT. YOU SIMPLY DISCONNECT THE SENSORS WIRE HARNESS, THE LOOSEN THE SENSOR. REPLACE WITH NEW SENSOR, RECONNECT HARNESS. YOU MAY SMELL A HOT TYPE ODOR THE FIRST TIME OR TWO THAT YOU DRIVE AFTER REPLACING THE SENSOR.