OE/Part Numbers : MD628059
Compatible Brands: for Mitsubishi
Compatible Vehicles & Years:
For Mitsubishi Diamante 1997-2004 V6 3.5L
For Mitsubishi Montero 1994-1996 V6 3.0L
For Mitsubishi Montero 1994-1999 V6 3.5L
For Mitsubishi Montero Sport 1997-2003 V6 3.0L
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
Applications
FAQ
Service
Product Overview
The Idle Stepper Motor IAC Valve MD628059 is designed to help regulate engine idle speed by controlling the amount of air entering the engine through the idle air passage. It is a replacement solution for Mitsubishi vehicles equipped with V6 3.0L and 3.5L engines, including Diamante, Montero, and Montero Sport models.
This idle air control motor features a stepper motor design that allows precise airflow adjustment during different operating conditions, helping improve idle stability, cold starts, and overall engine performance. The valve is manufactured with durable materials and designed for reliable operation in automotive environments.
Key Features
Direct Replacement Fit
Designed to replace original idle control components with compatible specifications for Mitsubishi applications.
Stable Idle Air Regulation
Controls bypass air flow around the throttle body to support consistent engine idle speed.
Durable Construction
Built with automotive-grade materials to withstand heat, vibration, and long-term engine operation.
Accurate Stepper Motor Control
Provides responsive position adjustment for improved idle air management.
Easy Installation
Designed for convenient replacement without major modifications to the existing system.
Application
This Idle Air Control Motor is commonly used to solve idle-related issues caused by aging or malfunctioning idle control components, such as:
Unstable engine idle speed
Engine stalling during idle
Poor cold start performance
Irregular RPM fluctuation
Inconsistent air intake control
A properly functioning IAC valve allows the engine control system to adjust airflow according to operating conditions, helping maintain smoother idle operation.
Installation Tips
Before installation, confirm the vehicle model, engine size, connector type, and OEM part number to ensure compatibility. Cleaning the throttle body and checking related air passages during replacement can also help improve idle control performance.
| Brand | Model | Year | Engine |
| MITSUBISHI | PAJERO II | 1997.11-2000.04 | 3.0 4WD (130KW,177PS) |
| MITSUBISHI | PAJERO SPORT I | 2000.06- | 3.0 V6 (125KW,170PS) |
| MITSUBISHI | PAJERO II | 1997.06-1999.10 | 3.0 V6 24V (130KW,177PS) |
| MITSUBISHI | PAJERO II | 1997.07-1999.10 | 3.5 V6 24V (143KW,194PS) |
| MITSUBISHI | SPORT WAGON I | 1998.11-2000.10 | 3.0 V6 (130KW,177PS) |
| MITSUBISHI | PAJERO II Canvas Top | 1994.06-2000.04 | 3.0 V6 24V (133KW,181PS) |
| MITSUBISHI | PAJERO II | 1994.06-1997.05 | 3.0 V6 24V (133KW,181PS) |
| MITSUBISHI | PAJERO II | 1994.06-1999.10 | 3.5 V6 24V (153KW,208PS) |
| MITSUBISHI | PAJERO II Canvas Top | 1990.12-1995.12 | 3.0 V6 (110KW,150PS) |
| MITSUBISHI | PAJERO II | 1990.12-1997.12 | 3.0 V6 4WD (110KW,150PS) |
Q1: What does the MD628059 Idle Air Control Valve do?
A: It controls the bypass air flow around the throttle body to help maintain stable engine idle speed.
Q2: Which vehicles use the MD628059 IAC Valve?
A: It is commonly used for Mitsubishi Diamante, Montero, and Montero Sport models with V6 3.0L and 3.5L engines.
Q3: What are common signs of a faulty IAC motor?
A: Common symptoms include unstable idle speed, engine stalling, RPM fluctuation, and difficulty maintaining idle operation.
Q4: Is this MD628059 valve a direct replacement part?
A: Yes, it is designed as a replacement unit for vehicles using compatible OEM numbers. Always verify the part number before purchase.
Q5: Does replacing the IAC valve require special tools?
A: Installation is generally straightforward, but proper inspection of the throttle body and electrical connection is recommended during replacement.
| 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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