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Air Control Valve

  1. Ensure air pump operates properly. Disconnect electrical connector at solenoid valve. Turn ignition on and check for 12 volts at connector. If voltage is not within specifications, check for open and repair as necessary.
  2. Start engine. Air should go to air cleaner or silencer. Connect solenoid electrical connector. Air should go to exhaust manifold. Check manifold vacuum signal at valve with engine idling. Vacuum should be 10 in. Hg (34 kPa). During decel and high vacuum signal, air should go to air cleaner and silencer. Replace valve if operation is incorrect.
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