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Home >> Ford >> 1982 >> Courier 2.3L Eng VIN 2, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Air Injection Systems >> Testing >> Air Control Valve Test >> Man. Trans. Equipped Vehicles Only
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Man. Trans. Equipped Vehicles Only

  1. Warm engine to normal operating temperature and stop engine. Detach air hose at bottom of air control valve. Start engine and run at idle.
  2. Remove vacuum line from No. 1 relief valve at top of control valve. Air should come from outlet port at bottom of air control valve.
  3. Reconnect vacuum line to No. 1 relief valve. No air should flow from outlet port.
  4. Disconnect vacuum line from No. 2 relief valve on side of control valve. Remove vacuum line from air by-pass valve (2.3L) or evap shutter valve (2.0L) and connect at No. 2 relief valve.
  5. This leads intake manifold vacuum directly to the No. 2 relief valve. Air should be discharged from the outlet port of the air control valve.
  6. Disconnect vacuum line from No. 2 relief valve and reconnect to air by-pass valve (2.3L) or evap shutter valve (2.0L). Check that air is not discharged from outlet port. If air flow from outlet port is not correct in any of the above tests, replace the air control valve.
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