Disconnect the electrical connector for the oxygen sensor.2. Loosen and remove the mounting bolts for the oxygen sensor.
Newer O2 sensors have an internal heating element; to change the O2 sensor heater, you change the O2 sensor. Changing the heated O2 sensor in a Toyota Tercel requires a specialized tool and is a relatively quick repair.
Instructions
1.The O2 sensor on the Toyota Tercel is belongings of the exhaust meeting.The O2 (Oxygen) sensor in fashionable automobiles is an electronic sensor that helps recorder and polity the engine air-to-fuel ratio. Most Oxygen sensors are object of the exhaust meeting and act not directly solution the air-fuel ratio, nevertheless the material they collect from the exhaust gases is used by the on-board personal computer to bias provided the engine is running very rich or too lean.
3. Use the oxygen sensor socket to unscrew the oxygen sensor and remove it.
4. Install a new sensor and tighten using the oxygen sensor socket.
5. Screw the mounting bolts in place and connect the electrical connector for the new oxygen sensor.
