Airflow Sensor: Dashpot
WARNING: This page is about a different car, the 1993 Volkswagen EuroVan. However, it is still accessible from the selected car via links, so may be relevant.
Ensure THROTTLE BODY adjustment is correct. Open and close throttle until dashpot piston contacts roller. With throttle in this position, check gap between limiter (stop) screw and throttle. Gap between limiter (stop) screw and throttle lever must be 0.06-0.10" (1.5-2.5 mm). If gap is not as specified, adjust dashpot.