Standard Ignition AC75 Idle Air Control Valve

Idle Air Control Valve for Select GM and Isuzu Applications

Restore stable idle control with the Standard Ignition AC75 idle air control valve. This replacement part is built for select vehicles that need precise airflow management at idle, including applications such as the Honda Passport, Isuzu Rodeo, and Oldsmobile Intrigue.

With a 4-terminal connector, 1 port, and included gasket and hardware, the AC75 is a practical service part for diagnosing and correcting idle quality concerns on fuel-injected engines.

Key Features

• Idle Air Control Valve for fuel injection system service
• Includes gasket for sealing at installation
• Hardware included for a complete service replacement
• 1-port design with 4 terminals
• Direct-fit coverage for select Isuzu, Honda, Acura, Chevrolet, GMC, Dodge, and Oldsmobile models
• Standard Ignition AC75 replacement part number

Detailed Description

The Standard Ignition AC75 is an idle air control valve used to regulate bypass air at the throttle body so the engine can maintain a steady idle under changing load conditions. It applies to a broad range of vehicles, including 1994-1999 Honda Passport, 1993-1999 Isuzu Rodeo, 1998-1999 Isuzu Amigo, 1999-2002 Oldsmobile Intrigue, and 1992-2002 Isuzu Trooper. It also fits select Chevrolet Astro, GMC Safari, Acura SLX, Isuzu VehiCROSS, and Dodge Monaco applications. This part cross-references AC143 and IAC41 for the same application.

Standard Ignition AC75 is a fitment-based replacement for drivers searching for an idle air control valve for Honda Passport, Isuzu Rodeo, or Oldsmobile Intrigue models. The included gasket and hardware support a cleaner service replacement when addressing idle control faults.

What It Is Used For

• High or low idle speed
• Rough idle after startup
• Idle fluctuation when accessories are turned on
• Stalling at stops or during deceleration
• Idle control issues related to airflow bypass at the throttle body

Installation Notes and Tips

Verify connector style, terminal count, and port configuration before installation. Clean the mounting surface thoroughly and replace the gasket during service to help maintain a proper seal. After installation, clear any stored diagnostic trouble codes and confirm idle speed stability at cold start and normal operating temperature. For fitment-specific service, confirm the vehicle year and model match the listed applications for the AC75.

Quality Assurance

Standard Ignition is a recognized aftermarket source for engine management and fuel delivery components. The AC75 is built as a replacement idle air control valve for the listed applications and is supplied with gasket and hardware for service installation.