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Home >> Chevrolet >> 1990 >> APV >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Idle Speed (Diesel) >> Curb Idle

Curb Idle

Set parking brake and block drive wheels. Warm engine to operating temperature. Install Tachometer (J-26925). Air cleaner must be in place and accessories turned off. Adjust low idle speed to specifications by turning low speed idle screw on pump. Refer to the IDLE SPEED (RPM) SPECIFICATIONS  table.