Standard AC20T Idle Air Control Valve

Idle Air Control Valve for Ford and Mercury Applications

The Standard AC20T idle air control valve is built for dependable idle-speed control on a wide range of Ford, Lincoln, and Mercury vehicles. It is a direct-fit fuel injection system component for restoring stable idle behavior when the original valve is worn or contaminated.

Compatible With 1985-1995 Ford, Mercury, and Lincoln applications, including Ford Taurus, Mustang, Ranger, Bronco, E-150/E-250/E-350 Econoline, and related Mercury and Lincoln models.

Key Features

• Idle air control valve for fuel injection system service
• Female connector with 1 connector interface
• 2 male blade terminals for electrical connection
• Valve contents only, for direct replacement use
• Built from quality components for dependable operation
• Standard AC20T cross-references Standard Ignition AC20 and other OE-style applications

Product Details

The Standard AC20T is an idle air control valve used to regulate bypass air around the throttle plate so the engine can maintain a steady idle under changing load conditions. This part is listed across many Ford and Mercury platforms, including Ford Taurus, Ford Mustang, Ford Ranger, Ford Bronco, and Ford E-Series vans, plus select Lincoln and Mercury models. It is also referenced for auxiliary air valve applications and certain emissions-specific configurations.

This part cross-references AP Exhaust 8490 for the same application.

Common Issues This Part May Address

• Rough or unstable idle
• Idle speed that drops too low or stalls
• Idle flare or hanging idle after throttle release
• Idle control problems caused by a worn or sticking valve
• Driveability concerns on Ford Taurus, Mustang, and Ranger idle systems

Installation Notes and Tips

• Verify connector style, terminal layout, and OE reference before installation.
• Confirm the exact vehicle application, since fitment varies by year, emissions package, and auxiliary air valve notes.
• Inspect the throttle body, intake passages, and related vacuum or electrical connections during service.
• Use the fitment notes for Federal Emissions, Mexico Emissions, and Auxiliary Air Valve listings where applicable.

Quality Assurance

Standard manufactures this idle air control valve with quality components for dependable service. The AC20T is an OE-style replacement part for vehicles that require precise idle air management.