CAUTION: Do not soak the masked area of the sensor. Contamination on porous ceramic coating may cause an incorrect oxygen sensor output signal.
WARNING: Avoid excess spraying. Remaining flammable substance could catch fire.
1997-2003 Protege
1997-2005 Miata
1997-2002 626
1997-2002 Millenia
1997-2006 MPV
2001-2006 Tribute
2003-2007 Mazda6
2004-2007 Mazda3
2004-2007 RX-8
2006-2007 Mazda5
2006-2007 MX-5
2007 CX-7
2007 CX-9
Use caution when removing oxygen sensors, otherwise the tip of the sensor may break off, which will be difficult to remove. In the worst case, both oxygen sensor and catalyst converter/exhaust pipe will need to be replaced.
Oxygen Sensor Removal Procedure
WARNING: To avoid personal injury, allow exhaust system to cool down before removing oxygen sensor.
1. Mask oxygen sensor with masking tape to prevent lubrication soaking.
2. Spray WD-40 (or equivalent) around flange area of oxygen sensor.CAUTION: Do not soak the masked area of the sensor. Contamination on porous ceramic coating may cause an incorrect oxygen sensor output signal.
WARNING: Avoid excess spraying. Remaining flammable substance could catch fire.
3. Wipe off excess lubricant.
4. Wait 10 minutes to allow lubricant to reach sensor threads.
5. Use SST 49 L018 001 to loosen sensor.
CAUTION: If reusing the oxygen sensor, completely remove masking tape to prevent vehicle fire.
NOTE: For anti-seizing of reused oxygen sensor, apply high concentration molybdenum disulfide grease (over 45) to the oxygen sensor threads, then tighten according to the Workshop Manual torque specifications.
