W 350 Pickup V8-5.9L VIN Z (1990)
Idle Speed/Throttle Actuator - Electronic: Adjustments
1.
Place transmission in NEUTRAL position.
2.
Apply parking brake and/or block rear wheels.
3.
START vehicle and allow to run for at least two minutes.
4.
Turn engine OFF, and allow 60 seconds to elapse for the throttle kicker to fully engage.
5.
Disconnect the electrical connector to the idle speed control actuator.
6.
Disconnect the electrical connector to the coolant temperature sensor.
Coolant Temperature Sensor
7.
Connect a tachometer to the engine.
8.
START the engine and allow to warm up to normal operating temperature.
9.
Adjust the extension screw on the idle speed control actuator to 2750 to 2850 rpm.
Idle Speed Control (ISC) Actuator Adjustment
10.
Turn the engine OFF.
11.
Reconnect the electrical connector to the idle speed control actuator.
12.
Reconnect the electrical connector to the coolant temperature sensor, and erase any fault codes that may have been set. For clearing fault codes
see DIAGNOSIS AND TESTING PROCEDURES/TESTING PROCEDURES/CLEARING FAULT CODES.
