Installing Lambda Sensor Upstream Of Catalytic Converter

→ 2400AW00 PRECAUTIONARY MEASURES WHEN HANDLING LAMBDA SENSORS .

Information 

• When reinstalling oxygen sensors, grease the thread with the Optimol Paste MF lubricant (Part No. 000.043.207.07) only. 
• New oxygen sensors have already been greased and the thread is fitted with a protection cap. 

1. 2.1. During reinstallation, the thread of the lambda sensors must be coated with the prescribed grease.
2. 2.2. Install lambda sensor on side 4-6.

   Position lambda sensor 4-6 -4-  upstream of catalytic converter -8-  and tighten with an open ring wrench Nr.98  and torque wrench.

   → Tightening torque: 55 Nm (41 ft. lb.) +/-5 Nm (+/-3.5 ft. lb.) 

   Fig 1: Identifying Lambda Sensor Upstream Of Catalytic Converter 4-6

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. 3.1. During reinstallation, the thread of the lambda sensors must be coated with the prescribed grease.
2. 3.2. Position lambda sensor 1-3 -3-  upstream of catalytic converter -9-  and tighten it with an open ring wrench Nr.98  and torque wrench.

   → Tightening torque: 55 Nm (41 ft. lb.) +/-5 Nm (+/-3.5 ft. lb.) 

   Fig 2: Identifying Lambda Sensor Upstream Of Catalytic Converter 1-3

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. 4.1. Route lambda sensor wire 4-6.

   Clip lambda sensor wire -2-  with the blue boot into the brackets -3, 4, and 5-  .

   Fig 3: Identifying Lambda Sensor Wire 4-6

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. 4.2. Route lambda sensor wire 1-3.

   Clip lambda sensor wire -2-  with the blue boot into the brackets -3, 4 and 5-  .

   Fig 4: Identifying Lambda Sensor Wire 1-3

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. 5.1. Connect plug connections for lambda sensors with the blue boot -2, 6-  on the right and left and insert into the bracket -3, 4-  .
   Fig 5: Identifying Lambda Sensor Plug Connections

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.