Oxygen Sensor In Front of Catalytic Converter
ATTENTION - Danger of burns from hot exhaust system.
- Only remove the exhaust system once it has cooled down.
- Wear protective gloves.
Preliminary work
1. Remove front wheel.
2. Remove front wheel housing liner.
3. Remove engine compartment cover above the oxygen sensor plugs.
Cable Plugs For Oxygen Sensors:
4. Disconnect oxygen sensor plug for the oxygen sensor in front of catalytic converter at the right of the water splash panel and unclip the cable from the holder.
5. Remove air cleaner housing.
6. Release oxygen sensor wire from cable guide and leave it at the oxygen sensor.
Tools and materials
Special Tools - Oxygen Sensors:
Accessory for torque wrench:
- Open ring wrench angled various lengths.
Component overview
1 - Exhaust manifold, cylinders 1-4
2 - Exhaust manifold, cylinders 5-8
3 - Seal for exhaust manifold; replace
4 - M8 hexagon nut; replace, coat thread of bolts with Microgleit
5 - Oxygen sensor ahead of catalytic converter
8 - Oxygen sensor ahead of catalytic converter
7 - Seal; replace
8 - M8 hexagon nut; replace
9 - Catalytic converter, front
10 - Catalytic convertor, front
11 - Support
12 - Support
13 - Hexagon-head bolt M10 x 25
14 - Hexagon-head bolt, M8 x 15
15 - Stud M8 x 25
16 - Oxygen sensor behind catalytic converter
17 - Seal; replace
18 - Catalytic converter
19 - Catalytic convertor
20 - Screw
21 - Bracket
22 - Bracket
23 - Bracket
24 - Hexagon-head belt, M8 x 25
Removing
ATTENTION
- The oxygen sensor cable can he damaged if twisted'.
- Change in emissions.
- Check Engine light comes on.
- Always expose oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.
1. Remove the oxygen sensor In the exhaust manifold using a mirror. To do this, screw out the oxygen sensor with an open-ended wrench SW 22.
Installing
1. Preassemble the oxygen sensor in the exhaust manifold by hand using a mirror. Tighten oxygen sensor using a special tool. (33 ftlb. ± 3.5 ftlb).
Subsequent work
1. Push oxygen sensor wire into the cable guide.
2. Connect the oxygen sensor plug for the oxygen sensor in front of catalytic converter at the right of the water splash panel and clip the wires into the guide. Fit cable plug.
3. Install air cleaner housing.
4. Fit engine compartment cover above the oxygen sensor plugs.
5. Install front wheel housing liner.
6. Fit front wheel.