Idle/Throttle Speed Control Unit: Adjustments

A/C VSV Adjusting Screw:

1. Remove air cleaner assembly.

2. Start engine and allow it to reach normal operating temperature (with A/C "ON").

3. Connect a tachometer.

4. Install a spare fuse in diagnosis switch terminal.

5. Check idle speed, adjust as necessary by adjusting the A/C vacuum switch valve idle screw. Refer to SPECIFICATIONS.

6. Remove spare fuse from diagnosis switch terminal.

7. Disconnect tachometer.

8. Install air cleaner assembly.

9. Re-check idle speed.

Accelerator Cable Adjustment:

Idle Speed Adjusting Screw:

Before starting engine place transaxle gear selector in Park (Neutral for M/T) and set parking brake and block drive wheels.

1. Check accelerator cable for free movement and excessive play, cable play should be within specification. Refer to SPECIFICATIONS.

2. Inspect lead wires and hoses of EFI and engine emissions control systems for being connected securely.

3. Check ignition timing, and adjust if necessary.

4. Turn "OFF" all accessories (A/C, wipers, heater, lights, etc.).

5. Make sure air cleaner is installed correctly.

6. Remove cover on Idle Speed Adjusting screw.

7. Start engine and allow it to reach normal operating temperature idle (accessories "OFF").

8. Connect a tachometer.

9. Install a spare fuse to diagnosis switch terminal in fuse block.

10. Check idle speed. Refer to SPECIFICATIONS. If idle speed is okay, proceed to steps 13 through 16.

11. If necessary, adjust idle speed to correct idle speed by turning idle speed adjusting screw "IN" to increase or "OUT" to decrease idle speed.

12. Remove spare fuse from diagnosis switch terminal.

13. Disconnect tachometer.

14. Install idle speed screw cover.

15. Install air cleaner assembly and related hoses.