Standard Ignition AC64 Idle Air Control Valve

Idle Air Control Valve for GM 2.2L Applications

Standard Ignition AC64 is an idle air control valve built for precise idle-speed management on select Chevrolet, Buick, Pontiac, Oldsmobile, GMC, and Isuzu applications. It uses a polymer-blended isotropic neodymium/iron/boron magnet, a high-strength stepping motor, and a shielded ball bearing to support accurate pintle movement and long service life.

Key Features

• Oval connector shape with 4 terminals
• 1 port design for idle air control service
• Gaskets included for installation
• Load-tested actuator for added durability
• High-strength stepping motor for consistent airflow control
• Shielded ball bearing helps resist environmental contaminants

Detailed Description

Standard Ignition AC64 is engineered to regulate bypass air at idle so the engine control system can maintain stable engine speed. The internal magnet and stepping motor are selected to provide accurate pintle control, while the sealed bearing design helps the valve stand up to contamination in everyday driving conditions. This part number is used across multiple GM compact and midsize platforms, including Chevrolet Cavalier, Chevrolet S10, GMC Sonoma, Pontiac Sunfire, Buick Century, Oldsmobile Cutlass Ciera, and Chevrolet Corsica, along with select Isuzu Hombre applications. AC64 is also cross-referenced to Delphi CV10025 for the same application.

What It Helps Fix

• Rough or unstable idle
• Idle speed that hangs too high after throttle release
• Stalling when coming to a stop
• Idle fluctuation caused by a sticking pintle
• Airflow control issues related to a worn idle air control valve

Installation Notes and Tips

Verify the oval connector, 4-terminal layout, and 1-port configuration before installation. Clean the throttle body and mating surfaces, then install the included gasket to help prevent vacuum leaks. After replacement, clear any stored idle-related codes if required and allow the engine control system to relearn idle strategy. Fits 1993-1997 Chevrolet Cavalier, N/A; Fits 1994-1997 Chevrolet S10, N/A; Fits 1994-1997 GMC Sonoma, N/A; Fits 1996-1997 Isuzu Hombre, N/A; Fits 1995-1997 Pontiac Sunfire, N/A; Fits 1993-1996 Buick Century, N/A; Fits 1993-1996 Chevrolet Corsica, N/A; Fits 1993-1996 Oldsmobile Cutlass Ciera, N/A.

Quality Assurance

Standard Ignition manufactures this idle air control valve with high-grade materials and load testing to confirm the actuator can deliver force beyond the actual operating load. The result is a replacement part built for accurate idle control and dependable operation in service.