Air Flow Meter/Sensor: Service and Repair

Mass Air Flow (MAF) Sensor G70, Removing And Installing

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.

NOTE:
- 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 Mass Air Flow (MAF) Sensor and air duct hose (intake air side) for salt residue, dirt, and leaves.
- Check intake ducting 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).

Installation is in reverse order of removal.