Airflow Sensor (DIGIFANT)
- Start engine to pressurize fuel system. Turn engine off and remove intake boot from top of airflow sensor. Check sensor plate by lifting plate through travel cycle with magnet or pliers.
- Continuous resistance should be felt. Move plate back to rest position. There should be no resistance. If resistance is felt, replace airflow sensor. See Fig 1
. If sensor plate lever is difficult to move upward but moves freely downward, check sensor plate for correct centering.
- Sensor plate should be evenly centered in housing with plate edge at narrowest section of venturi while at rest position. If sensor plate adjustment is correct, check control plunger for sticking. If control plunger is sticking, replace fuel distributor assembly.
Courtesy of VOLKSWAGEN UNITED STATES, INC.