Automatic Transmission

Fig. 14 Intake Air Control Diaphragm:

1. Start engine and run until cooling fan comes on.
2. Disconnect and plug air control diaphragm hose.
3. Connect tachometer.

Fig. 22 Pinching Vacuum Hose Between Vacuum Solenoid Valve 'C' And The Vacuum Chamber:

4. Using a clamp pinch off vacuum hose between frequency solenoid "C" and the vacuum chamber.

Fig. 23 Idle Control Screw Initial Adjustment (Automatic Transmission):

5. Turn out idle control screw until it is flush with the bracket it is threaded into.

Fig. 24 Throttle Stop Screw Location (Automatic Transmission):

6. By turning the throttle stop screw lower idle speed to below 580 rpm.

Fig. 25 Idle Control Screw (Automatic Transmission):

7. Adjust idle speed to 630 ± 50 by turning the idle control screw.
8. Using the throttle stop screw again, adjust idle speed to 700 ± 50 rpm.

Fig. 26 Adjustment Screw 'A' (Automatic Transmission):

9. With the brake applied and the engine idling in gear, adjust idle speed using adjusting screw "A".

Expected result:
High Alt 675 ± 50 rpm.
Low Alt 700 ± 50 rpm.

Fig. 27 Adjustment Screw 'B' (Automatic Transmission):

10. If equipped with air conditioning, return vehicle to "P" or "N".
11. Turn on air conditioning, and using adjusting screw "B" adjust idle to 700 ± 50 rpm.
12. Remove clamp installed on hose in step 4.
13. Stabilize by snapping the throttle between idle and 2500 rpm 2 or 3 times. Recheck idle speed in "P" of "N".

Expected result:
730 ± 50 rpm.