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Home >> Mercury >> 1994 >> Villager LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Secondary Air Injection >> Air Injection Solenoid Valve
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Air Injection Solenoid Valve

  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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