Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your new electronic throttle body. Designed for specific Nissan 5.6L models, this component is crucial for regulating the air intake into your engine, ensuring optimal performance and fuel efficiency. Please read this manual thoroughly before attempting any installation or maintenance.
Specifications
| Attribute | Value |
|---|---|
| OE/OEM Part Number | TB1277 |
| Manufacturer Part Number | WS170184R01 |
| Type | Throttle Body |
| Material | Aluminum |
| Color | Silver |
| Features | Electronic |
| Connector Type | Blade |
| Connector Quantity | 1 |
| Fuel Type | Gasoline |
| Items Included | Mounting Hardware |
| Universal Fitment | Yes |
| Performance Part | Yes |
| Vintage Part | No |
| Manufacturer Warranty | 1 Year |
| Origin | Mainland China |
| Country/Region of Manufacture | United States |
| High-concerned chemical | None |
Compatibility
This throttle body is designed for direct fitment in the following Nissan vehicles:
- Nissan Armada 5.6L (2018-2019)
- Nissan NV2500 5.6L (2018-2019)
- Nissan NV3500 5.6L (2018-2019)
Always verify the OE/OEM part number (TB1277) and manufacturer part number (WS170184R01) against your vehicle's existing part or service manual to ensure proper fitment.
Setup and Installation
Disclaimer: Installation of automotive components can be complex. If you are not experienced with vehicle repair, it is highly recommended to seek professional assistance. Ensure the vehicle's battery is disconnected before beginning any work.
- Preparation: Park the vehicle on a level surface and engage the parking brake. Disconnect the negative terminal of the vehicle's battery. Allow the engine to cool completely.
- Locate the Existing Throttle Body: The throttle body is typically located between the air intake hose and the intake manifold.
- Remove Air Intake Components: Loosen clamps and remove the air intake hose, air filter housing, and any other components obstructing access to the throttle body.
- Disconnect Electrical Connector: Carefully disconnect the electrical connector from the existing throttle body.
- Disconnect Hoses: Disconnect any vacuum lines or coolant hoses attached to the throttle body. Be prepared for minor fluid leakage if coolant lines are present.
- Remove Mounting Bolts: Unscrew the mounting bolts securing the old throttle body to the intake manifold.
- Remove Old Throttle Body: Carefully remove the old throttle body and the old gasket. Clean the mounting surface on the intake manifold thoroughly to ensure a proper seal.
- Install New Gasket: Place the new gasket (if included or purchased separately) onto the intake manifold mounting surface.
- Install New Throttle Body: Position the new throttle body (Model S20182 TB1277) onto the gasket and align the mounting holes.
- Secure Mounting Bolts: Hand-tighten the mounting bolts, then tighten them to the manufacturer's specified torque using a torque wrench. Do not overtighten.
- Reconnect Hoses and Electrical Connector: Reattach all vacuum lines, coolant hoses, and the electrical connector securely.
- Reinstall Air Intake Components: Reinstall the air intake hose, air filter housing, and any other components removed earlier. Ensure all clamps are tightened.
- Reconnect Battery: Reconnect the negative terminal of the vehicle's battery.
- Perform Throttle Body Relearn Procedure: After installation, an electronic throttle body relearn procedure may be necessary. Consult your vehicle's service manual or a professional mechanic for the specific steps for your Nissan model. This often involves a series of ignition cycles and pedal presses.
Figure 1: Front view of the S20182 TB1277 Throttle Body, showing the main air intake and butterfly valve.
Figure 2: Close-up of the electrical connector, crucial for electronic control.
Operating Instructions
The electronic throttle body operates automatically as part of your vehicle's engine management system. It precisely controls the amount of air entering the engine based on accelerator pedal input and other sensor readings. No direct user operation is required beyond normal driving.
- The throttle body's electronic motor adjusts the butterfly valve position to regulate airflow.
- This precise control contributes to optimal engine performance, fuel economy, and emissions.
- Ensure all electrical connections are secure to prevent erratic operation.
Figure 3: Internal view of the throttle body, illustrating the butterfly valve that controls airflow.
Maintenance
Regular maintenance helps ensure the longevity and proper function of your throttle body.
- Inspection: Periodically inspect the throttle body for any signs of damage, loose connections, or excessive dirt buildup.
- Cleaning: Over time, carbon deposits and oil residue can accumulate on the throttle plate and bore, affecting performance.
- To clean, carefully remove the air intake hose to expose the throttle plate.
- Using a throttle body cleaner (specifically designed for electronic throttle bodies) and a lint-free cloth, gently clean the throttle plate and the inside of the throttle body bore.
- Do NOT force the throttle plate open manually, as this can damage the electronic motor. If necessary, have a professional perform the cleaning.
- Gasket Replacement: Always use a new gasket when reinstalling or replacing the throttle body to ensure an airtight seal.
Troubleshooting
If you experience issues after installation or during normal operation, consider the following:
- Check Engine Light (CEL): If the CEL illuminates, retrieve diagnostic trouble codes (DTCs) using an OBD-II scanner. Codes related to throttle position sensors or throttle actuator control can indicate an issue with the throttle body or its wiring.
- Rough Idling or Stalling: This can be caused by a dirty throttle body, improper installation, or a failed relearn procedure. Ensure the throttle body is clean and the relearn procedure has been correctly performed.
- Lack of Power or Hesitation: A malfunctioning throttle body can restrict airflow, leading to reduced engine power. Check for proper electrical connections and ensure the throttle plate moves freely.
- Accelerator Pedal Inconsistencies: If the engine response to the accelerator pedal is erratic or delayed, it could point to an issue with the electronic throttle control system, including the throttle body.
- Loose Connections: Verify that all electrical connectors and vacuum/coolant hoses are securely attached.
If troubleshooting steps do not resolve the issue, consult a qualified automotive technician.
User Tips
- Professional Installation Recommended: While this guide provides steps, professional installation is always recommended for critical engine components to ensure correct function and avoid potential damage.
- Throttle Body Relearn: Do not skip the throttle body relearn procedure after installation. This step is crucial for the vehicle's computer to correctly calibrate the new throttle body.
- Use Quality Cleaner: When cleaning, always use a throttle body cleaner specifically formulated for electronic throttle bodies to avoid damaging sensitive electronic components.
- Check for Air Leaks: After installation, listen for any hissing sounds around the throttle body, which could indicate an air leak from an improperly sealed gasket.
Warranty and Support
This throttle body comes with a 1-year manufacturer warranty. For warranty claims or technical support, please contact your point of purchase or the manufacturer directly with your purchase details and the product's OE/OEM part number (TB1277) and manufacturer part number (WS170184R01).
Keep your purchase receipt as proof of purchase for warranty purposes.
