Lumina V6-191 3.1L VIN T MFI (1993)
1.
After restoring battery power, connect the Tech 1 "SCAN" tool.
2.
Select "IAC SYSTEM," then select "IDLE LEARN" in the "MISC TEST" mode.
3.
Proceed with idle learn as directed.
^
This procedure allows the ECM memory to be updated with the correct IAC valve pintle position, for the vehicle, and provide a stable idle
speed.
