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Automatic Idle Speed Motor

  1. Turn ignition on. Motor should move arm rearward and open throttle blades. When vehicle is started, idle should be 580 RPM in "D" and should remain constant. If not, adjustment may be necessary.
  2. Connect EFI tester with diagnostic aid. Connect tachometer pick-up to No. 1 spark plug lead, battery leads to battery, and place diagnostic aid switch to normal position.
  3. Start engine and run until warm. Move diagnostic aid switch to manual and depress control switch until engine speed no longer decreases. Place transmission selector in "D".
  4. Idle speed should be 530-630 RPM. If not, adjust to 580 RPM by turning screw on end of AIS motor linkage. One turn of screw will change idle speed 50 RPM.
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