General screw-in type automotive O2 sensor.
Installing brand-new O2 (O2S) sensors on your Lexus IS 300 is a easy step provided you select the required precautions. The exhaust action, where the O2 sensors are located, may heat up to 1,500 degrees F in 3 minutes or less. Nevertheless, you can safely transform one or exceeding O2 sensors in your vehicle in a episode of minutes succeeding these intelligible steps.
Instructions
1. Grassland your machine in a guarded deposit with a constant surface and quota of extension for you to occupation environing the vehicle.
2. If you are replacing more than one sensor, locate the second unit at the other end of the catalytic converter and replace it following Steps 5 through 8; then lower the vehicle and connect the black, negative battery cable.
4. Establish the oxygen sensor adjacent the exhaust manifold down the exhaust channel. You should contemplate the sensor threaded into the cylinder equitable before it connects to the catalytic converter. On some Lexus models, it is needed to lift the vehicle to set and stretch the sensors. Stand the left side of the vehicle using a floor jack and levy a jack stand near the front tire; provided you are replacing both oxygen sensors, up thrust the back of the automobile and compass another jack stand near the rear tire.
5. Unplug the oxygen sensor's electrical connector. Push the lock tab and separate the connector from the vehicle harness. Be very careful and keep your hands and body parts away from hot exhaust system components. On some Lexus models, you may need to remove the passenger seat and lift the carpeting in order to find and unplug the sensor's connector.
6. Remove the sensor using a box wrench or ratchet and oxygen sensor socket. If the sensor seems hard to remove, apply penetrating oil around the sensor mounting base according to the manufacturer instructions. On some Lexus models, the sensor attaches to the exhaust pipe with a flange and two bolts or nuts; use a wrench or ratchet and socket to remove the bolts or nuts.
7. Apply anti-seize compound to the new sensor's threads if you are installing a screw-in type sensor. Make sure not to touch the tip of the sensor with anti-seize compound. Start the sensor into the exhaust pipe by hand first; then tighten the sensor using the box wrench or ratchet and oxygen sensor socket. If you are installing a flange type sensor, install a new gasket and set the flange and sensor in place. Thread in the flange mounting nuts or bolts and tighten with a wrench or ratchet and socket.
8. Plug the sensor's electrical connector. Embarkation the engine and let it span operating temperature; then turn the ignition Off.3. Free the hood and disconnect the melanoid, contravening battery cable.
