Air Flow Meter/Sensor: Service and Repair

Mass Air Flow Sensor

Removing

- Disconnect electrical connector - 1 - from mass air flow (MAF) sensor (G70).





- Remove both bolts - arrows - of the air duct at the lock carrier.





- Disconnect air duct - 2 - from air filter housing.

- Open hose clamp on air duct hose to turbocharger and pull it off at Mass Air Flow (MAF) Sensor (G70).

- Remove both bolts from Mass Air Flow (MAF) Sensor (G70).

- Carefully pull the Mass Air Flow (MAF) Sensor ( G70) out of the guide from air filter housing.

Installing

For problem-free operation of the Mass Air flow (MAF) Sensor (G70) it is very important to observe the following notes and procedures.

• If the air filter element is very dirty or soaked, dirt particles or moisture may have contaminated the Mass Air Flow (MAF) Sensor (G70) and may be causing false mass air flow values. This results in a reduction of power, since a lower injection quantity is calculated.

• Always use an original equipment air filter element.

• Use a lubricant (silicone-free) for installing the air duct hose.

• Secure all hose connections using hose clamps appropriate for the model type.

- Check (MAF) Sensor and air duct hose (intake air side) for salt residue, dirt, and leaves.

- Check intake duct up to the air filter element for dirt. If any contaminants are discovered, clean the air filter housing (upper and lower parts) of salt residue, dirt and leaves (if necessary, clean by washing or vacuuming). Air filter, removing and installing. Refer to => [ Air Filter Element ] Service and Repair

Installation is in reverse order of removal.