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Chevrolet
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1999
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Lumina Base, 3.1 M
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Repair and Diagnosis
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Engine Performance
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Specifications
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Engine Control System - Service & Adjustment Specifications
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Fuel System
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Idle Speed & Mixture
Idle Speed & Mixture
NOTE:
Idle mixture is controlled by Powertrain Control Module (PCM). Idle speed is preset by manufacturer and is not adjustable.