Left upper lambda sensor r r
- Make
- Alfa Romeo
- Model
- GT Factory Service Manual
- Year
- 2003–2010
- Section
- Exhaust emission control system › Left upper lambda sensor r r
LEFT UPPER LAMBDA SENSOR R R
Removing
Ensure that the ignition key is in the OFF position, then disconnect the negative battery terminal (-).
| Name | Connector | |
|---|---|---|
| Battery | See A1B BATTERY ( BATTERY NEGATIVE ) |
1. Disconnect the electrical connection for the left upper Lambda sensor and release it from its mounting bracket.
| Name | Connector | |
|---|---|---|
| 1 | Lambda sensor on pre-catalyzer | See K15 LAMBDA SENSOR ON PRE-CATALYZER |
2. Undo and remove the left upper Lambda sensor.
Refitting
1. Place the left upper Lambda sensor back in its housing and tighten it to the recommended torque.
| Fastening | Component | Ø | Value (daNm) | |
|---|---|---|---|---|
| 1 | RIGHT LAMBDA SENSOR | M18 | 4.0 ÷ 5.0 |
2. Connect the electrical connection for the left upper Lambda sensor and secure it to the mounting bracket.
Connect the negative (-) battery terminal
Removing
Position the vehicle on the ramp
Ensure that the ignition key is in OFF position, then disconnect the battery negative terminal (-).
| Name | Connector | |
|---|---|---|
| Battery | See A1B BATTERY ( BATTERY NEGATIVE ) |
Proceed with removal
Op. 7055B54 UNDER-ENGINE GUARD - R R
1. Disconnect the electrical connection for the upper left Lambda sensor.
2. Undo and remove the left upper Lambda sensor.
| Name | Connector | |
|---|---|---|
| 1 | Lambda sensor on pre-catalyzer | See K15 LAMBDA SENSOR ON PRE-CATALYZER |
Refitting
Place the left upper Lambda sensor back in its housing and tighten it to the recommended torque.
| Fastening | Component | Ø | Value (daNm) | |
|---|---|---|---|---|
| LEFT LAMBDA SENSOR | M18 | (Left catalytic preconverter side) 4.1 ÷ 5.0 |
Connect the electrical connection for the left upper Lambda sensor.
Proceed with refitting
Op. 7055B54 UNDER-ENGINE GUARD - R R.
Connect the negative (-) battery terminal
Remove the car from the ramps.
Removing
Position the vehicle on the ramp.
Ensure that the ignition key is in the OFF postition, then disconnect the battery negative terminal.
| Name | Connector | |
|---|---|---|
| Battery | See A1B BATTERY ( CONNECTORS ) |
Proceed with the removal
Op. 1072C44 EXHAUST MANIFOLD HEAT SHIELD ON BULKHEAD - R+R.
1. Disconnect the electrical connection for the left Lambda sensor.
| Name | Connector | |
|---|---|---|
| 1 | Lambda sensor on pre-catalyzer | See K15 LAMBDA SENSOR ON PRE-CATALYZER ( ENGINE ) |
1. Release the electrical wiring for the left Lambda sensor from the fastening.
2. Undo and remove the left Lambda sensor.
Refitting
Place the left Lambda sensor back in its housing and tighten it to the recommended torque.
| Fastening | Component | Ø | Value (daNm) | |
|---|---|---|---|---|
| LEFT LAMBDA SENSOR | M18 | (Exhaust manifold side) 4.1 ÷ 5.0 |
Secure the electrical wiring for the left Lambda sensor to the fastening.
Connect the electrical connection for the left Lambda sensor.
Proceed with the refitting
Op. 1072C44 EXHAUST MANIFOLD HEAT SHIELD ON BULKHEAD - R+R.
Connect the battery terminal (-).
Remove the car from the ramp.
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