buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Fuel Injector Cleaning Procedure|Page 2589 > < Fuel Injector Cleaning Procedure|Page 2587
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default value.  To return the IAC valve pintle to the correct position, perform the following procedure:

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.

Fuel Injector Cleaning Procedure|Page 2589 > < Fuel Injector Cleaning Procedure|Page 2587