Standard Ignition AC548 Idle Air Control Valve

Idle Air Control Valve for Ford GT

Standard Ignition AC548 is an idle air control valve for the 2005-2006 Ford GT. It regulates bypass airflow at idle so the engine can maintain stable speed during cold starts, accessory loads, and stop-and-go driving. This AC548 replacement is built for direct fitment on the Ford GT application listed below.

Key Features

• Idle Air Control Valve for Ford GT applications
• 1 hose connector, 1 port, and 2 terminals
• Uses a polymer-blended, isotropic neodymium/iron/boron magnet for precise 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
• Standard Ignition AC548 direct replacement part

Detailed Description

Standard Ignition AC548 is an idle air control valve engineered for the 2005-2006 Ford GT. It manages idle airflow through the throttle bypass circuit, helping the engine maintain the correct idle speed when conditions change. The internal motor and magnet design support accurate pintle control, while the sealed bearing construction helps protect the motor from contamination in demanding underhood environments. If you are servicing a Ford GT with idle instability, this AC548 valve provides a direct-fit replacement option.

This part cross-references 4G7Z9F715AA and AC4407 for the same application.

Common Issues It May Solve

• Rough or unstable idle on a Ford GT
• Stalling when coming to a stop
• Idle speed that hangs too high or drops too low
• Poor idle control during cold starts
• Airflow control faults related to the idle bypass circuit

Installation Notes and Tips

Verify the connector style, port layout, and terminal count before installation. Confirm the vehicle application against the 2005-2006 Ford GT fitment listing and inspect the throttle body and intake passages for carbon buildup or contamination that can affect idle control performance. After installation, clear any stored fault codes and confirm stable idle operation at warm and cold engine conditions.

Quality Assurance

Standard Ignition manufactures this idle air control valve with high-grade materials and load-tested components to support consistent operation and service life. The AC548 is built to meet the demands of the Ford GT idle control system.