Oxygen Sensor after Catalytic Converter, Bank 2

Oxygen Sensor after Catalytic Converter, Bank 2

Special tools, testers and auxiliary items required

• Hose clamps up to 25 mm dia. (3094)

• Ring spanner 7-piece set (3337) for oxygen sensor

Removing

• All cable ties which are opened or cut open when removing, must be replaced in the same position when installing.

- Remove engine cover.

- Clamp off coolant hose - 2 - using hose clamps (3094) and pull off coolant hose.

- If necessary, seal connection using an appropriate plug.

- Remove coolant reservoir. - arrow -.





- Disconnect electrical wire from Engine Coolant Level (ECL) warning switch (F66) at bottom on coolant reservoir and set aside coolant reservoir with coolant hose - 1 - connected.

- Disconnect electrical connector - 4 -.





- Remove retainer for 4 electrical connections on bulkhead (to simplify removal and installation of oxygen sensor).

- Free up oxygen sensor wire up to oxygen sensor.

- Remove rear noise insulation.

- Remove oxygen sensor using tool (3337/5) and the extension (3337/6) from ring spanner 7-piece set (3337).





Installing

Tightening Specifications





Installation is in reverse order of removal, not the following:

• New oxygen sensor threads are coated with an assembly paste. This paste must not contact sensor openings.

• For a used oxygen sensor, only grease threads with hot bolt paste. This paste must not contact sensor openings; Hot bolt paste

• During installation, all cable ties and clips on transmission must be reinstalled at the same location to prevent the oxygen sensor wiring from contacting the exhaust manifold.

• Secure all hose connections using hose clamps appropriate for the model type: