In a 1998 Jeep Wrangler, the oxygen sensor is located in the exhaust pipe. It can be found just below the junction of the exhaust manifold and the exhaust pipe.
The oxygen sensor is screwed into the exhaust, behind the engine.
Remove the oxygen sensor vacuum to. Remove the oxygen sensor screws. Reverse the process to install the new oxygen sensor.
The sensor is located in the rear exhaust manifold.
Use a 02 socket. The 2 sensor are located in front and behind the cat.
Check engine light would appear.
Right after the catalytic converter or " downstream " of the converter.
Possible bad sensor, it is on the rear of the head. On the driver side.
The service department will put in a new oxygen sensor, with a 25% discount on parts if you are a Chrysler employee, for $102.**. The sensor, with the discout, is @ $95.
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Your MIL ( malfunction indicator light ) will be lit and a code for your O2 sensor will be logged.
The oil pressure sensor is usually above the oil filter adapter.