6000 V6-173 2.8L (1988)
Idle Speed/Throttle Actuator - Electronic: Adjustments
IDLE LEARN PROCEDURE
Any time the battery is disconnected, the programmed position of the Idle Air Control (IAC) valve pintle is lost, and replaced with a "default"
value. To return the IAC valve pintle to the correct position, perform the following procedure:
^
Restore battery power.
^
Connect Tech I "Scan" tool.
^
Select "IAC SYSTEM," then select "IDLE LEARN" in the "MISC TEST" mode.
^
Proceed with idle learn as directed.
This procedure allows the Electronic Control Module (ECM) memory to be updated with the correct IAC valve pintle position, for the vehicle,
and provide a stable idle speed.