Air Injection (AIR) Solenoid
WARNING: This page is about a different car, the 1995 Ford Pickup, 1995 Ford F-Super Duty, and 1995 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Solenoid is normally closed and consists of 2 vacuum ports with an atmospheric vent. The solenoid outlet port is open when activated and closed when deactivated. When activated, the outlet port is open to the inlet port and closed to atmospheric vent.