Porshe 911 (997). Manual - part 139

Removing oxygen sensors in front of catalytic converter

Removing oxygen sensor in front of catalytic converter of cylinder bank 1-3

Note

Always expose oxygen sensor wire far enough for it to be able to turn when unscrewing the sensor.

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→ 241000  Precautionary measures when handling oxygen sensors

Disconnect plug connection for oxygen sensor:

1. Disconnect plug connection in left of engine compartment for the oxygen sensor in front of

catalytic converter. To do this, pull the black connector out of the holder first -2- .

2. Release blue cable of the oxygen sensor in front of catalytic converter from the cable holder.

Oxygen sensor in front of catalytic converter

3. Undo oxygen sensor using an open-ended wrench or open ring wrench (a/f 22) and screw it out by hand

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Removing oxygen sensor in front of catalytic converter of cylinder bank 4-6

Note

Diagnostic system: reading out fault memory and activating systems

 Removing oxygen sensors in front of catalytic converter

713

Always expose oxygen sensor wire far enough for it to be able to turn when unscrewing the sensor.

• 

→ 241000  Precautionary measures when handling oxygen sensors

Plug connection for oxygen sensor

1. Disconnect plug connection in right of engine compartment for the oxygen sensor in front of catalytic

converter. To do this, pull the black connector out of the holder first -2- .

2. Release blue cable of the oxygen sensor in front of catalytic converter from the cable holder.

Oxygen sensor in front of catalytic converter

3. Undo oxygen sensor using an open-ended wrench or open ring wrench (a/f 22) and screw it out by hand

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 .

Installing oxygen sensors in front of catalytic converter

Installing oxygen sensor in front of catalytic converter of cylinder bank 1-3

1. Route the oxygen sensors so that the cable can be easily routed from the engine compartment side

to the exhaust system.

2. Position the oxygen sensor by hand and screw in as far as

possible.

Diagnostic system: reading out fault memory and activating systems

Removing oxygen sensor in front of catalytic converter of cylinder bank 4-6

714

Tightening oxygen sensor

3. Tighten oxygen sensor with commercially available open ring wrench  accessory for torque

wrench. Open ring wrench angled NR.96-3

 and torque wrench Torque wrench,

signal-transmitting with changeover ratchet NR.90

 and tighten to the specified tightening

torque → Tightening torque: 41 ftlb. +/-3.5 ftlb. .

4. Route the blue oxygen sensor cable and secure it in the sheetmetal brackets, cable holders, or the

cable guide (right side).

5. Connect plug connection (blue cable - black connector) and insert in the holder.

Installing oxygen sensor in front of catalytic converter of cylinder bank 4-6

1. Guide the oxygen sensors through so that the cable can be easily routed from the engine compartment side

to the exhaust system.

2. Position the oxygen sensor by hand and screw in as far as

possible.

3. Tighten oxygen sensor with commercially available open ring wrench  accessory for torque wrench.

Open ring wrench angled NR.96-3

 and torque wrench Torque wrench, signal-transmitting with

changeover ratchet NR.90

 tighten → Tightening torque: 41 ftlb. +/-3.5 ftlb. .

4. Route the blue oxygen sensor cable and secure it in the sheetmetal brackets, cable holders, or the

cable guide (right side).

5. Connect plug connection (blue cable - black connector) and insert in the holder.

Subsequent work

Subsequent work for installing oxygen sensors in front of catalytic converter

1. Install air cleaner housing → 242519 Removing and installing air cleaner housing - chapter on

"installing".

997110, 997111, 997120, 997121, 997310, 997311, 997320, 997321, 997410, 997411, 997430, 997431,
997610, 997611, 997620, 997621

Diagnostic system: reading out fault memory and activating systems

Installing oxygen sensor in front of catalytic converter of cylinder bank 1-3

715

WARNUNG

Gefahr des Verlusts der Text-Bild-Zuordnung beim Ausdruck.

Aus technischen Gründen kann derzeit nicht ausgeschlossen werden, dass trotz
einwandfreier Darstellung auf dem Bildschirm beim Ausdruck der
Zusammenhang von Text und zugehörigem Bild verloren geht.

• 

Wird der Fehler nicht bemerkt, besteht die Gefahr, daß Arbeiten nicht korrekt
durchgeführt werden und es dadurch zu Personen- und Sachschäden kommt.

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→ Vergleichen Sie deshalb nach dem Druckvorgang unbedingt die Ausdrucke mit der
Bildschirmdarstellung. Korrigieren Sie die Ausdrucke im Fehlerfall so, daß der Inhalt der
Bildschirmdarstellung zutreffend wiedergegeben wird.

WARNING

Danger of losing text-figure correspondence when printing out.

For technical reasons, it can currently not be ruled out that the correspondence
between text and associated figure can be lost when it is printed out, even though
the display on the screen is correct.

• 

If the fault is not noticed, there is the danger that work will not be performed
correctly which can cause injury and damage.

• 

→ Therefore, always compare printouts with the screen display after printing them out. Correct
the printouts if they are faulty so that the content of the screen display matches that on the
printouts.

AVERTISSEMENT

Risque de perte de la correspondance texte-illustration lors de l'impression papier.

Pour des raisons techniques, il ne peut pas être exclu à l'heure actuelle que, même
en cas d'affichage correct à l'écran, la correspondance entre le texte et l'illustration
puisse être erronée sur l'impression papier.

• 

Si l'erreur passe inaperçue, on court le risque d'exécuter certaines opérations de
manière incorrecte pouvant conduire à des dommages corporels et matériels.

• 

→ Comparez impérativement pour cette raison les impressions papier avec l'affichage à l'écran.
Corrigez-les en cas d'erreur de manière à reproduire correctement l'affichage à l'écran.

ATTENZIONE

Pericolo di perdita dell'abbinamento testo-immagine nella stampa.

Per motivi tecnici non è escluso che, nonostante la rappresentazione sullo schermo

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Diagnostic system: reading out fault memory and activating systems

Subsequent work for installing oxygen sensors in front of catalytic converter

716