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Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> External Pages >> Different car >> Section 158 (Engine Controls - System/Component Tests - EEC-IV (4.0L)) >> Emission Systems & Subsystems >> Secondary Air Injection >> Air Injection Solenoid Valve

Air Injection Solenoid Valve

WARNING: This page is about a different car, the 1995 Ford Explorer and 1995 Ford Aerostar. However, it is still accessible from the selected car via links, so may be relevant.
  1. Vacuum control valve is normally closed when not energized. Valve may come with or without controlled bleed. Unstable idle may result from a leaking AIR solenoid valve. An electrical malfunction with valve should set a Diagnostic Trouble Code (DTC).
  2. If unstable idle exists, remove vacuum hose from valve and plug hose. Warm engine to normal operating temperature. If idle becomes smoother, replace valve.
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