Quarters the O2 Sensor in a 2002 Mazda 626
The O2 sensors in your 2002 Mazda 626 serve a indispensable advantage to the engine governance course in your automobile. Reading O2 levels from the exhaust, the Oxygen sensors replace the dossier to voltage and packages it to the vehicle's pc. The pc adjusts the air/fuel blend at the fuel injectors based on this clue. Start the car and verify that it is running as intended.
Position a jack under the front of your Mazda and hoist the front deadline off the ground. Compass a allot of jack stands under the frame to relieve the vehicle then remove the jack.
2. Establish the O2 sensors in the exhaust system. There are two sensors, one in the head pipe just below the exhaust manifold and one in the exhaust pipe just behind the catalytic converter.
3. Locate the wiring harness connector from the car to the O2 sensor. Release the locking tab on the connector and separate the two halves.
4. Remove the O2 sensor from the exhaust with an O2 sensor socket and a ratchet. Turn the sensor counterclockwise until the threads fully disengage from the exhaust pipe then remove and discard the sensor.
5. Install the new sensor into the exhaust pipe and tighten it by turning it clockwise with the ratchet and O2 sensor socket. Do not use any thread-locking compound or anti-seize on the threads of the sensor. Any compound that gets on the sensor will cause it to send false readings to the computer.
6. Connect the wiring harness connector from the new sensor to the connector on the car. Push it in until the locking tab engages, holding the two halves securely together.
7. Repeat the entire process to change the second sensor if needed. Position a jack under the car and raise it off the jack stands. Remove the jack stands from under the car.
8. Lower the car to the ground and remove the jack. Provided the Oxygen sensor fails, the personal computer Testament not appreciate the readings are incorrect, and the engine Testament bound either as well comfortable or gaunt. Burdensome starts, Rugged unused and stalling are all symptoms of a deficient Oxygen sensor.
