Volkswagen New Beetle. Manual - part 1286

3. 25 Nm  

4. 30 Nm  

5. 25 Nm 

z

replace  

6. Connection tube  

7. Connecting piece, 35 Nm  

8. 4-pin harness connector 

z

Black  

z

For Heated Oxygen Sensor (HO2S) 1 before Three Way Catalytic Converter (TWC) -G39- and 
Oxygen Sensor (O2S) heater -Z19-  

z

Component location: At right vehicle underside  

z

Component location: At right vehicle underside  

9. Heated Oxygen Sensor (HO2S) -G39- bank 1*, 50 Nm 

z

Component location: in front catalytic converter  

z

Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen 
sensor  

z

Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay -J17-  

z

Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter 
(TWC). See OXYGEN SENSOR HEATER FOR OXYGEN SENSOR BEFORE THREE 
WAY CATALYTIC CONVERTER (TWC), CHECKING .  

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter 
(TWC). See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION 
BEFORE CATALYTIC CONVERTER .  

10. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- bank 1*, 50 Nm 

z

Component location: In rear catalytic converter  

z

Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen 
sensor  

z

Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay -J17-  

z

Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter 
(TWC). See OXYGEN SENSOR HEATER FOR OXYGEN SENSOR BEHIND THREE 
WAY CATALYTIC CONVERTER (TWC), CHECKING .  

z

Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter 
(TWC). See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION 
BEHIND CATALYTIC CONVERTER .  

11. 4-pin harness connector 

z

brown  

z

For Heated Oxygen Sensor (HO2S) 2 behind Three Way Catalytic Converter (TWC) -G130- and 
heater for lambda-probe 1 -Z29-  

z

Component location: At right vehicle underside  

12. to front muffler 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Exhaust System Emission Controls, 2.0L Generic Scan Tool - New Beetle

  

z

See item 1 .  

13. Front exhaust pipe with catalytic converter 

z

Check catalytic converter. See CATALYTIC CONVERTER, CHECKING .  

14. 40 Nm 

z

replace  

15. Bracket  

16. Seal 

z

replace  

17. Exhaust manifold  

18. Heat shield 

Fig. 1: Identifying Exhaust Manifold, Front Exhaust Pipe With Three Way Catalytic Converter 
And Attachments (Vehicles With Engine Code AEG) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Exhaust manifold, front exhaust pipe with Three Way Catalytic Converter (TWC) and attachments (vehicles with 
engine code AVH, AZG, BDC) 

1. Heat shield  

2. Heated Oxygen Sensor (HO2S) -G39- bank 1*, 50 Nm 

z

Component location: In exhaust manifold  

z

Use "G5" to grease thread only; do not let "G5" get onto slits of oxygen sensor body  

z

Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay - J17-  

z

Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter 
(TWC). See OXYGEN SENSOR HEATER FOR OXYGEN SENSOR BEFORE THREE 
WAY CATALYTIC CONVERTER (TWC), CHECKING .  

z

Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter 

NOTE:

The following list refers to Fig. 2 .

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Exhaust System Emission Controls, 2.0L Generic Scan Tool - New Beetle

  

(TWC). See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION 
BEFORE CATALYTIC CONVERTER .  

3. 10 Nm  

4. 25 Nm  

5. 25 Nm 

z

replace  

6. Connection tube  

7. Connecting piece, 35 Nm  

8. Exhaust manifold  

9. Seal 

z

replace  

10. Front exhaust pipe with catalytic converter 

z

Check catalytic converter. See CATALYTIC CONVERTER, CHECKING .  

11. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) - G130- bank 1*, 50 Nm 

z

Component location: In rear catalytic converter  

z

Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen 
sensor  

z

Voltage supply of oxygen sensor heater via Fuel Pump (FP) Relay - J17-  

z

Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter 
(TWC). See OXYGEN SENSOR HEATER FOR OXYGEN SENSOR BEHIND THREE 
WAY CATALYTIC CONVERTER (TWC), CHECKING .  

z

Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter 
(TWC). See CHECK OXYGEN SENSOR AND OXYGEN SENSOR REGULATION 
BEHIND CATALYTIC CONVERTER .  

12. 10 Nm  

13. Heat shield 

z

for catalytic converter  

14. 10 Nm  

15. Spring nut  

16. Suspended mount  

17. 25 Nm  

18. 40 Nm 

z

replace  

19. Seal 

z

replace  

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Exhaust System Emission Controls, 2.0L Generic Scan Tool - New Beetle

  

Fig. 2: Identifying Exhaust Manifold, Front Exhaust Pipe With Three Way Catalytic Converter And 
Attachments (Vehicles With Engine Code AVH, AZG, BDC) 
Courtesy of VOLKSWAGEN OF AMERICA, INC. 

Mufflers with mounts 

1. From Three Way Catalytic Converter (TWC)  

2. Double clamp 

z

replace  

z

Note installed position. See Installation position of double clamp .  

3. 25 Nm  

4. Suspended mount 

z

Note installed position. See Installation position of muffler suspension .  

5. Front muffler 

z

At factory, front and rear mufflers are installed as a single component. Replacement front and rear 
mufflers are supplied separately, with replacement double clamp for connecting joint.  

z

Install front muffler parallel. See Aligning front muffler parallel .  

6. Separating point 

z

Separation point at exhaust pipe. See Separation point at exhaust pipe .  

7. Suspended mount  

8. Bracket  

9. Rear muffler 

z

At factory, front and rear mufflers are installed as a single component. Replacement front and rear 
mufflers are supplied separately, with replacement double clamp for connecting joint.  

10. Suspended mount 

z

With retainer ring  

NOTE:

The following list refers to Fig. 3 .

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE Exhaust System Emission Controls, 2.0L Generic Scan Tool - New Beetle