Colt Wagon 2WD L4-1468cc 1.5L SOHC (1989)
Fig. 75 Idle Speed Control Servo Connector
5. Turn the ignition switch OFF and disconnect the electrical connectors for the idle speed control servo. This will lock the idle speed control plunger
at the initial position.
6. Open the throttle valve more than half-way, two or three times. Release the throttle valve and let it return with a click.
7. Loosen the factory set speed adjusting screw fully.
8. Connect a tachometer, start the engine and maintain idle speed.
9. Check that the idle speed is within specifications.
Basic Idle Speed:
750 ± 50 RPM
10. If idle speed is not as specified, adjust the idle speed control adjusting screw with a hexagon wrench.
11. Turn the adjusting screw in until the engine speed rises slightly.
12. Back-off the adjusting screw to the "touch point", where the engine speed ceases to decrease.
13. Back-off the adjusting screw an additional half turn from the "touch point".
14. STOP the engine. Readjust the accelerator cable.
15. Reconnect the electrical connector for the idle speed control servo and remove the voltmeter from the engine.
16. With the ignition switch OFF, disconnect the negative battery terminal for at least 15 seconds. This will clear any diagnostic codes that may have
occurred during testing.
17. Reconnect the battery, start the engine and check that the engine is operating in the normal idle range.
