buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Air Cleaner Housing > < Base Idle Speed
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Idle Speed: Adjustments
Controlled Idle Speed

The Controlled Idle Speed is controlled by the Powertrain Control Module (PCM) which operated the Idle Speed Control (ISC) Motor. The ISC motor
is NOT mechanically adjustable. If Controlled Idle Speed is incorrect, begin diagnosis at Computers and Control Systems / System Diagnosis / Flow
of Diagnosis
.

Air Cleaner Housing > < Base Idle Speed