Heated Oxygen Sensor In Front of Catalytic Converter and Oxygen Sensor Behind Three Way Catalytic Converter, Cylinder Bank 1
Heated Oxygen Sensor in Front of Catalytic Converter and Oxygen Sensor Behind Three Way Catalytic Converter, Cylinder Bank 1
Special tools, testers and auxiliary items required
• Ring Spanner 7-Piece Set for Oxygen Sensor (3337)
Removing
• During installation, all cable ties must be re-installed at the same location.
- Remove the engine cover.
- Disconnect electrical connector - 1 - on Mass Air Flow (MAF) Sensor (G70).
- Disconnect the vacuum line - 3 - to the air guide pipe.
Risk of violating emissions legislation.
• Do not open hose connection - 2 -!
- Loosen the clamps - 4 -, open the clips - arrows - and move the air guide hose to the side with the crankcase ventilation hose still connected - 2 -.
- Remove affected electrical connector from bracket and disconnect it.
2 For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130)
3 For Heated Oxygen Sensor (HO2S) (G39)
• The installation location is shown with the engine removed.
Heated Oxygen Sensor (HO2S) (G39), Removing
- Remove the Heated Oxygen Sensor (HO2S) (G39) - 4 - using a tool from the Ring Spanner 7-Piece Set for Oxygen Sensor (3337).
Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130), Removing
- Remove the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) - 1 - using a tool from the Ring Spanner 7-Piece Set for Oxygen Sensor (3337).
Installing
• Tightening Specifications. Refer to => [ Oxygen Sensors Assembly Overview ] Oxygen Sensors Assembly Overview.
Installation is in reverse order of removal, note the following:
• Coat new oxygen sensors with an assembly paste. This paste must not come into contact with sensor slots.
• For a used oxygen sensor, only coat threads with hot bolt paste. This paste must not come into contact with sensor slots.
• Electrical wire of oxygen sensor must always be secured in the same position when installing so that contact with the exhaust pipe is avoided.
• During installation, all cable ties must be re-installed at the same location.