OEM Throttle Body Idle Air Control Valve (IACV) User Manual

1. Introduction

This manual provides essential information for the installation, operation, and maintenance of the OEM Throttle Body Idle Air Control Valve (IACV), Part Number 16430-HP6-A01. This component is designed to regulate the engine's idle speed by controlling the amount of air bypassing the throttle plate. Proper installation and maintenance are crucial for optimal engine performance and longevity.

2. Product Overview

The Idle Air Control Valve (IACV) is a critical component of your vehicle's fuel injection system. It manages the engine's idle speed by allowing a controlled amount of air to bypass the throttle body. This specific IACV, part number 16430-HP6-A01, is an OEM replacement designed for specific Honda models, ensuring compatibility and reliable performance. It is black in color and measures approximately 3 x 3 x 1 inches.

• Part Number: 16430-HP6-A01 (Supersedes 16430-HN8-A61)
• Color: Black
• Dimensions: Approximately 3 x 3 x 1 inches (L x W x H)
• Included Components: 1 IACV unit
• Country of Origin: Japan

3. Compatibility and Fitment

This IACV is compatible with a range of Honda models. Please verify your vehicle's make, model, and year against the list below to ensure proper fitment.

Note: Always consult your vehicle's service manual for specific repair procedures and safety guidelines. Professional installation is recommended.

4. Installation Guide

Replacing the Idle Air Control Valve typically involves a few steps. Ensure the engine is cool before beginning any work. This guide provides general instructions; specific steps may vary by vehicle model.

4.1. Tools Required

• Socket Wrench Set
• Screwdriver Set
• Clean Rag
• Dielectric Grease (optional, for electrical connector)

4.2. Installation Steps

1. Disconnect Battery: For safety, disconnect the negative terminal of your vehicle's battery.
2. Locate IACV: The IACV is typically mounted on the throttle body. Refer to your vehicle's service manual for the exact location.
3. Disconnect Electrical Connector: Carefully unplug the electrical connector from the old IACV.
4. Remove Mounting Bolts: Use the appropriate socket wrench to remove the bolts securing the IACV to the throttle body.
5. Remove Old IACV: Gently pull the old IACV away from the throttle body. Be aware that there might be a gasket or O-ring that needs to be replaced.
6. Clean Mounting Surface: Clean any residue from the mounting surface on the throttle body to ensure a proper seal with the new IACV.
7. Install New IACV: Position the new IACV (Part Number 16430-HP6-A01) with its new gasket or O-ring onto the throttle body. Ensure it is seated correctly.
8. Secure Mounting Bolts: Reinstall the mounting bolts and tighten them evenly to the manufacturer's specified torque (consult your vehicle's service manual).
9. Reconnect Electrical Connector: Plug the electrical connector firmly back into the new IACV.
10. Reconnect Battery: Reconnect the negative terminal of the battery.
11. Perform Idle Relearn Procedure (if necessary): Some vehicles may require an idle relearn procedure after replacing the IACV. Consult your vehicle's service manual for specific instructions. This often involves starting the engine and letting it idle for a few minutes without touching the accelerator.

5. Operation

The Idle Air Control Valve operates automatically, controlled by the vehicle's Engine Control Unit (ECU). Its primary function is to maintain a stable engine idle speed under various conditions, such as when the air conditioning is turned on, or electrical loads change. The IACV adjusts the amount of air bypassing the throttle plate to compensate for these changes, preventing the engine from stalling or idling too high.

Once installed, the IACV requires no direct user interaction for its operation. Its performance is continuously monitored by the ECU.

6. Maintenance

The IACV itself is generally a sealed unit and does not require routine maintenance. However, carbon buildup can affect its performance over time. If you experience idle issues, cleaning the throttle body and the IACV's air passages can sometimes resolve the problem.

6.1. Cleaning Recommendations

• Use a specialized throttle body cleaner.
• Never use harsh solvents or abrasive materials.
• Avoid spraying cleaner directly into the electrical connector.
• Always follow the instructions on the cleaner product.

Regular engine maintenance, including air filter replacement and fuel system cleaning, can help prevent excessive carbon buildup that might affect IACV operation.

7. Troubleshooting

If you experience issues related to engine idle after installing or during the use of the IACV, consider the following common problems and solutions:

If these steps do not resolve the issue, it is recommended to seek assistance from a certified automotive technician.

8. Specifications

• Product Name: OEM Throttle Body Idle Air Control Valve (IACV)
• Part Number: 16430-HP6-A01
• Supersedes Part Number: 16430-HN8-A61
• Brand: Generic (OEM Equivalent)
• Model Number: HP6
• Color: Black
• Dimensions (L x W x H): Approximately 3 x 3 x 1 inches
• Inlet Connection Type: Threaded
• Outlet Connection Type: NPT
• Number of Ports: 2
• Valve Type: Globe Valve
• Country of Origin: Japan

9. Warranty and Support

For information regarding warranty coverage and technical support for this product, please refer to the seller's or manufacturer's specific policies at the time of purchase. Keep your purchase receipt as proof of purchase.

For general automotive repair advice, consult a certified mechanic or refer to reputable automotive service manuals.