Standard Ignition AC63 Idle Air Control Valve

Idle Air Control Valve for GM Compact Cars

Standard Ignition AC63 is an idle air control valve built for precise airflow management at the throttle body. It is a direct-fit service part for select Chevrolet Cavalier and Corsica, plus Buick Skyhawk and Oldsmobile Firenza applications.

• Oval connector shape with 4 terminals
• 1-port idle air control valve design
• Polymer-blended, isotropic neodymium/iron/boron magnet for accurate pintle movement
• High-strength stepping motor for controlled airflow response
• Shielded ball bearing helps resist environmental contaminants
• Load-tested actuator for added durability and consistent operation
• No gasket included
• No hardware included

Fitment Details

• Fits 1987-1991 Chevrolet Cavalier, N/A
• Fits 1987-1991 Chevrolet Corsica, N/A
• Fits 1987-1989 Buick Skyhawk, N/A
• Fits 1987-1988 Oldsmobile Firenza, N/A

Standard Ignition AC63 is engineered for vehicles that need stable idle control during cold starts, stop-and-go driving, and throttle lift-off. On Chevrolet Cavalier and Chevrolet Corsica models, as well as Buick Skyhawk and Oldsmobile Firenza applications, this idle air control valve helps regulate bypass air so the engine can maintain the commanded idle speed. The AC63 uses durable internal components and load-tested actuator construction to support consistent performance over time.

Common Symptoms It Can Address

• Rough or unstable idle
• Stalling when coming to a stop
• Idle speed that hangs too high or drops too low
• Hard starting related to idle airflow control
• Idle fluctuation after throttle release

Installation Notes

Verify the oval connector, 4-terminal layout, and 1-port configuration before installation. Clean the throttle body and mating surfaces, and transfer or source any required gasket separately since no gasket is included. Confirm the vehicle application against the original part number before replacing the valve.

This part cross-references Delphi CV10005 and Four Seasons 76039 for the same application.

Quality Assurance

Standard Ignition manufactures this idle air control valve with high-grade materials and tests the actuator under load to confirm it can deliver greater force than the actual operating load. That added margin supports long service life and consistent idle control in daily driving conditions.