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Minimum Air Rate

  1. Remove air cleaner and gasket. With Idle Air Control (IAC) valve connected, ground terminal "A" to "B" at ALDL connector.
  2. Turn ignition on, DO NOT  start engine. Wait approximately 30 seconds for IAC valve pintle to extend and seat in throttle body.
  3. With ignition on, disconnect IAC valve electrical connector. Remove ground at ALDL connector. Using an awl, remove plug for minimum idle speed adjustment by piercing, then applying leverage.
  4. Install a tachometer and start engine. Allow engine to reach operating temperature. Adjust idle screw to specification with vehicle in Neutral. Turn ignition off. Reconnect IAC valve electrical connector. Install air cleaner and gasket.
  5. This procedure will set a code 35. Erase code by disconnecting electrical power to ECM for 30 seconds.
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