1. Introduction
This manual provides essential information regarding the MXR Electronic Throttle Body. The throttle body is a crucial component in your vehicle's engine air intake system, controlling the amount of air flowing into the engine. This precise control is vital for optimal engine performance, fuel efficiency, and emissions.
2. Specifications
| Attribute | Value |
|---|---|
| Type | Throttle Body |
| Bore Diameter | 76mm |
| Air Intake Port Maximum Diameter | 3-7/16 inch |
| Main Port Inside Diameter | 3 inch |
| Throttle Plate Diameter | 3 inch |
| Material | Aluminum |
| Housing Length | 5-7/8 inch |
| Housing Width | 5-15/16 inch |
| Connector Quantity | 1 |
| Mount Hole Quantity | 4 |
| Terminal Quantity | 6 |
| Fuel System Type | FI |
| Item Weight | 1150 g |
| Item Height | 12.1 cm |
| Item Width | 18.2 cm |
| Item Length | 20.2 cm |
| Placement on Vehicle | Front |
| Country/Region of Manufacture | China |
| Origin | Mainland China |
Part Numbers
- OEM NO.: 161191LA0A, 161191LA0C
- Manufacturer Part Number: 161191LA0D, TB1277
- Interchange Part Number: 977-324, S20182
- Other Part Number: 6E-0012, 977324, 6E0012
3. Compatibility
This MXR Electronic Throttle Body is compatible with the following vehicle models and years:
- Infiniti QX56 5.6L (2011-2013)
- Infiniti QX80 5.6L (2014-2019)
- Nissan Armada 5.6L (2018-2019)
- Nissan NV2500 5.6L (2018-2019)
- Nissan NV3500 5.6L (2018-2019)
- Nissan Titan 5.6L (2017-2019)
- Nissan Titan XD 5.6L (2016-2019)
Please verify the part numbers and vehicle compatibility before installation to ensure proper fitment.
4. Features
The MXR Electronic Throttle Body is designed with several key features to enhance vehicle performance and reliability:
- High Strength Corrosion Resistance: Constructed from durable aluminum, ensuring longevity and resistance to environmental factors.
- Precise Air Volume Adjustment: Equipped with advanced technology to accurately control intake air volume, optimizing engine performance and fuel efficiency.
- Faster Response: Engineered for improved acceleration and a more responsive driving experience.
- Stable Idling: Contributes to reduced engine vibration and noise for a smoother and quieter operation.
- Direct Replacement: Designed for straightforward installation as a direct replacement part.
5. Setup and Installation
Professional installation is highly recommended for this component due to the complexity of modern engine systems and the need for precise calibration. No specific installation instructions are included with the product.
If you are performing the installation yourself, please consider the following general guidelines:
- Safety First: Disconnect the vehicle's battery before beginning any work. Ensure the engine is cool.
- Locate the Throttle Body: The throttle body is typically located between the air intake hose and the intake manifold.
- Disconnect Components: Carefully disconnect the air intake hose, electrical connectors, and any coolant lines or vacuum hoses attached to the old throttle body.
- Remove Old Throttle Body: Unbolt the old throttle body from the intake manifold.
- Install New Throttle Body: Mount the new MXR throttle body, ensuring a proper seal with a new gasket (if required and not included).
- Reconnect Components: Reattach all electrical connectors, coolant lines, vacuum hoses, and the air intake hose.
- Reconnect Battery: Reconnect the vehicle's battery.
- Calibration/Relearn Procedure: Many modern vehicles require a throttle body relearn procedure after replacement. This often involves specific steps (e.g., turning the ignition on/off, pressing the accelerator) or may require a diagnostic scan tool. Consult your vehicle's service manual or a professional for the exact procedure.
Important Note: This throttle body is designed to fit aftermarket intake manifolds that are larger than stock size. If using a stock-sized intake manifold, a spacer may be needed to allow the throttle plate to fully open.
6. Operating Principles
The electronic throttle body works in conjunction with your vehicle's Engine Control Unit (ECU). When you press the accelerator pedal, it sends an electronic signal to the ECU, which then commands the throttle body's electric motor to open or close the throttle plate. This precisely regulates the amount of air entering the engine, which is then mixed with fuel for combustion. This electronic control allows for more accurate and responsive engine management compared to older cable-driven systems.
7. Maintenance
Regular maintenance of your throttle body can help ensure optimal engine performance. Over time, carbon deposits and grime can build up on the throttle plate and inside the bore, affecting its operation.
Cleaning the Throttle Body
It is recommended to have the throttle body inspected and cleaned periodically, typically during routine vehicle maintenance. A professional technician can safely clean the throttle body using specialized cleaners without damaging sensitive electronic components.
Caution: Improper cleaning methods or harsh chemicals can damage the electronic components of the throttle body. Always consult a professional or your vehicle's service manual for recommended cleaning procedures.
8. Troubleshooting
If you experience any of the following symptoms, your throttle body may be malfunctioning or damaged:
- Difficulty Starting: The vehicle struggles to start or fails to start.
- Throttle Not Returning: After pressing the accelerator, the throttle does not return to its idle position.
- Increased Smoke and Fuel Consumption: Noticeable increase in exhaust smoke and/or a significant drop in fuel economy.
- High Idle Speed: The engine idles at an unusually high RPM.
- Uneven Acceleration: Hesitation or surging during acceleration.
If these issues occur, it is advisable to have your vehicle inspected by a qualified mechanic to diagnose the problem and determine if the throttle body requires replacement or repair.
9. User Tips
While no specific user reviews or Q&A were available for direct inclusion, general tips for throttle body replacement and maintenance include:
- Always use a new gasket when replacing the throttle body to ensure a proper seal and prevent vacuum leaks.
- After installation, perform the necessary throttle body relearn procedure for your specific vehicle model to ensure correct idle and performance.
- Consider cleaning your throttle body as part of your regular engine maintenance schedule to prevent carbon buildup.
10. Warranty and Support
For information regarding the warranty period, terms, and conditions for this MXR Electronic Throttle Body, please refer to the original seller or manufacturer's documentation provided at the time of purchase. For technical support or assistance with installation and troubleshooting, contact the seller or a certified automotive technician.