OE/Part Numbers : 171111788 AC105 AC6
Compatible Brands: for Buick, Chevrolet, GMC
Compatible Vehicles & Years:
For Buick Skyhawk 1987-1989 L4 2.0L
For Chevrolet Beretta 1990-1991 L4 2.2L
For Chevrolet Corsica 1990-1991 L4 2.2L
For Chevrolet K3500 1988-1995 V8 7.4L
For GMC C3500 1988-1995 V8 7.4L
Key Functions: This idle stepper motor regulates engine idle speed, ensuring stable performance, smooth cold starts, and preventing stalling under varying loads.
Features & Advantages:
1. Direct OEM Fit & Function.
2. High-Quality Components for Reliability.
3. Rigorous Quality Control.
More Details
Key Features
FAQ
Service
Product Overview
This Idle Stepper Motor IAC Valve is designed to regulate engine idle air flow by controlling the amount of air bypassing the throttle plate. It helps maintain stable engine idle speed, smoother engine operation, and improved throttle response. The valve is compatible with various Buick, Chevrolet, and GMC applications, including Buick Skyhawk, Chevrolet Beretta, Chevrolet Corsica, and GMC C3500 models. Related IAC valve references include AC105, AC6, and OE number 171111788.
Product Features
Stable Idle Control: The stepper motor design allows precise adjustment of bypass air flow to support consistent engine idle performance.
Direct Replacement Fit: Designed to match original equipment specifications for easier installation and replacement.
Durable Construction: Made with reliable materials to withstand engine heat, vibration, and long-term operating conditions.
Responsive Operation: Provides accurate valve movement to help reduce idle fluctuations, stalling issues, and irregular engine speed.
Wide Vehicle Compatibility: Suitable for selected Buick, Chevrolet, and GMC vehicles requiring compatible IAC valve assemblies.
Application
This Idle Air Control Valve is suitable for vehicle repair, maintenance, and replacement projects requiring a compatible idle control component. It is commonly used to restore proper idle air management on older fuel-injected vehicles and support stable engine operation.
Q1: Should the throttle body be cleaned before replacing the IAC valve?
A: Cleaning carbon deposits around the throttle body area is recommended to help ensure proper airflow and valve operation after installation.
Q2: What are the symptoms of a faulty IAC valve?
A: Common symptoms include unstable idle, engine stalling, fluctuating RPM, or difficulty maintaining idle speed.
Q3: Is this IAC valve a direct replacement part?
A: Yes, this valve is designed as a replacement unit for vehicles using compatible part numbers 171111788, AC105, or AC6.
Q4: Which vehicles can use this Idle Stepper Motor IAC Valve?
A: It is designed for applications including Buick Skyhawk, Chevrolet Beretta, Chevrolet Corsica, and GMC C3500. Please confirm vehicle details before purchase.
Q5: Does the package include installation accessories?
A: Package contents may vary. Please check the product listing or contact the supplier for detailed package information.
| Packaging and delivery | |
| Selling Units | Single item |
| Single package size | 20X20X20 cm |
| Single gross weight | 2.000 kg |
| Lead time | |
| Quantity (units) | Lead time (days) |
| 1 - 1,000 | 31 |
| > 1,000 | To be negotiated |
| Customization options | |
| Bag Design | 10,000 units |
| Laser Printing | 10,000 units |
| Carton Design | 10,000 units |
Wenzhou Guocheng Automobile Electrical Parts Co., Ltd.
Wenzhou Guocheng Automobile Electrical Parts Co., Ltd. is located in Wenzhou, Zhejiang Province, known as China's capital of auto parts. Established in 1997, the company covers a land area of 3,000 square meters with a built-up area of 10,000 square meters. It is a privately-owned enterprise integrating product development, production, and sales.
Our core products include idle speed motors, idle control valves, throttle position sensors, and other sensor series primarily used in automotive and construction machinery engines. To ensure superior quality, key components such as sensor brushes are imported from Japan and Germany, while films are custom-produced by top-tier domestic and international suppliers. Our products are already supplied to first-tier brands both in China and abroad, and our annual production and sales volume holds a significant position in the OEM market.
To meet production demands and customer requirements, we have continuously invested in advanced production, testing, and experimental equipment from both domestic and international sources. This has significantly enhanced our production inspection and testing capabilities, ensuring consistent and reliable product quality. Currently, we have over 80 employees, including 6 experienced technical engineers and 8 professional technical and inspection personnel, providing strong support for product development and quality control.
Since its inception, the company has adhered to the quality policy of "Continuous Learning, Technological Innovation, Pursuit of Excellence, and Customer Satisfaction." We uphold a "people-oriented" talent philosophy and emphasize a customer-centric approach in quality management, focusing on process control, prevention, continuous improvement, and customer satisfaction. Since 2007, the company has been certified with ISO 9001:2000 and ISO/TS 16949:2009 international quality management system standards.
Over the years, through relentless efforts, innovation, and improvement, Guosheng has earned consistent praise from both new and existing customers for its exceptional product quality, comprehensive service, and competitive pricing. To achieve greater development, our team remains committed to striving harder, learning humbly, and making continuous progress. We constantly summarize experiences and enhance product quality while working with passion and sincerity to collaborate with partners worldwide for mutual success. We sincerely welcome your valuable feedback and visits for guidance.
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