Curb Idle Speed

Fig. 85 Tachometer Hookup:

1. When setting the idle speed make sure that:
a. Air cleaner is installed.
b. All vacuum hoses are connected.
c. Make sure that all fuel injection wiring connectors are fully plugged in.
d. Engine should be at normal operating temperature.
e. All accessories should be turned off and the transmission in neutral.
2. Connect a tachometer to the engine. Fig. 85

NOTE: Never allow the tachometer terminal to contact a ground as this could cause damage to the ignition system. Some tachometers are not compatable with this ignition system. Please confirm the compatibility of your tachometer before connecting it.

Fig. 88 Check Connector And Service Wire:

3. Using a service wire, connect terminals TE1 (California) or T (all others) and E1 of the check connector, Fig. 88
4. Race engine to 1,000 - 1,300 rpm for about 5 seconds and return to idle rpm.
5. Check the idle speed.

Idle Speed: 650 ± 50 rpm

Fig. 89 Idle Speed Adjustment Screw:

6. If the idle speed is not as specified, adjust the idle speed by turning the idle speed adjusting screw. Fig. 89
7. Remove the service wire.
8. Check the idle speed with service wire removed.

Idle Speed: 700 ± 50 rpm

9. If the idle speed is not within these values, perform the following procedures and then recheck the idle speed.
a. Perform a driving test (at a speed of about 7 mph), including several stops and starts. Stop the car and turn the ignition switch OFF.
b. Start the engine, idle for thirty seconds and then turn the engine OFF.
10. By doing this, idle data will be stored in the ISC (idle speed control) and the idle rpm should be at the specified value.