fits model: Prix, Grand. make: Pontiac. year: 1999.

( Manufacturer Part Number: 17113576 ), ( Manufacturer Warranty: 90 Day ), ( Core Charge: 1.00 Which Is Included In The Total Price ), ( Genuine Oem: Yes ), ( Seller Notes: 3.1 ), ( Interchange Item Code: 337 ), ( Color: Red ), ( Type: Fuel Injection Throttle Body ), ( Partout Id: A-120722735 )
The **Pontiac 17113576 Fuel Injection Throttle Body (1999 PX-7 Valve)** is a precision-engineered component designed to regulate airflow into the engine s combustion chambers, ensuring optimal performance, efficiency, and emissions compliance for select Pontiac vehicles from the late 1990s. This throttle body is specifically tailored for applications equipped with the **PX-7 valve**, a type of electronic throttle control (ETC) system that replaces traditional mechanical throttle linkages with a fully digital approach. The unit features a robust, durable construction with high-quality materials, including a **painted aluminum housing** that resists corrosion and wear, while the internal components such as the **throttle valve plate, position sensor, and idle air control (IAC) motor** are engineered for smooth, responsive operation. The throttle body incorporates a **digital pulse-width modulation (PWM) system**, allowing the engine control module (ECM) to precisely adjust throttle position based on driver input, engine load, and vehicle speed, thereby enhancing throttle response and fuel economy. Compatible with Pontiac s **L6 and L81 V8 engines** found in models like the **Montana, Aztek, and some GTO variants**, this part is a direct-fit replacement for the original equipment (OEM) component, ensuring seamless integration with the vehicle s fuel injection system. Whether replacing a worn-out or failed throttle body or upgrading an existing setup for improved performance, this unit delivers reliable throttle control, minimal airflow restriction, and compatibility with modern diagnostic tools, making it an essential component for maintaining or restoring the drivability of these classic Pontiac models.
### **Pros and Cons of Buying a Pontiac 17113576 Fuel Injection Throttle Body (1999 Prix Valve)**
#### **Pros:**1. **Compatibility with Classic Engines** The Pontiac 17113576 throttle body is designed for the **LS1/LS6** engine family, commonly found in 1997 2004 Pontiacs (GTO, Firebird, Trans Am, Bonneville) and GM performance vehicles. If your 1999 Prix Valve uses an LS1-based engine, this part will fit directly, ensuring proper fuel delivery and throttle response.
2. **Improved Fuel Efficiency & Performance** A well-functioning throttle body ensures optimal air-fuel mixture, which can enhance engine efficiency, throttle response, and power output. If your current throttle body is clogged or worn, replacing it may restore lost performance.
3. **Easier Maintenance & Cleaning** Unlike older mechanical throttle bodies, this electronic throttle body (ETB) is simpler to clean (using throttle body cleaner) and maintain. It eliminates the need for constant cable adjustments, reducing long-term hassle.
4. **OEM Quality & Reliability** As an original equipment part, it meets Pontiac s manufacturing standards, offering durability and compatibility with the vehicle s computer systems (ECU). Aftermarket knockoffs may not integrate as smoothly.
5. **Future-Proofing** If you plan to modify your Prix Valve (e.g., forced induction, engine swaps), an OEM throttle body provides a solid foundation before upgrading to aftermarket alternatives like **Holley, Edelbrock, or Moroso** throttle bodies.
6. **Cost-Effective for Basic Use** For stock or lightly modified engines, this throttle body is a budget-friendly solution compared to high-end aftermarket alternatives.
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#### **Cons:**1. **Limited Performance Potential** The stock throttle body has a **smaller airflow capacity** (typically around **60 70 cfm**), which can become a bottleneck under heavy throttle or with forced induction (turbo/supercharger). For high-RPM or high-horsepower applications, an aftermarket throttle body (e.g., **100 cfm**) is necessary.
2. **Electronic Dependence** Since it s an electronic throttle body (ETB), it relies on the vehicle s computer for proper operation. If the ECU has issues or is not properly programmed, the throttle body may not function correctly, leading to drivability problems.
3. **Potential for Clogging** Over time, carbon buildup, oil residue, or fuel deposits can clog the throttle body, restricting airflow. While cleanable, this requires periodic maintenance (every **50,000 100,000 miles**).
4. **No Throttle Position Sensor (TPS) Upgrade Path** The stock throttle body includes a basic TPS, which may not be as precise as aftermarket sensors. If you plan advanced tuning, you may need to replace the TPS separately.
5. **Limited Aftermarket Support** Unlike more popular throttle bodies (e.g., **Ford EEC-IV, Chevy 700-4/5**), this Pontiac part has fewer aftermarket modifications (e.g., no common "big bore" throttle body options).
6. **Potential for ECU Mismatches** If the vehicle s ECU is not properly calibrated for this throttle body (e.g., after a tune or engine swap), it may cause **rough idle, stalling, or poor throttle response**.
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### **Conclusion:**The **Pontiac 17113576 throttle body** is a **solid OEM replacement** for a 1999 Prix Valve with an LS1 engine, especially if you need a **direct fit, reliable, and cost-effective solution** for basic maintenance or stock performance. It excels in **simplicity, compatibility, and ease of cleaning**, making it ideal for **daily drivers, restomod projects, or lightly modified engines**.
However, if your goals include **high-performance tuning, forced induction, or significant horsepower gains**, this throttle body will **quickly become a limiting factor**. In such cases, investing in an **aftermarket throttle body (e.g., Holley 100 cfm, Edelbrock E-TEC, or Moroso 100 cfm)** along with a **custom tune** will be necessary to avoid airflow restrictions.
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### **Recommendation:** - **Buy the Pontiac 17113576 throttle body if:**- You need a **direct OEM replacement** for a stock or mildly modified LS1 engine.
- Your primary concern is **replacing a worn or clogged throttle body** without major modifications.
- You plan to **clean and maintain it regularly** to prevent carbon buildup.
- You are on a **budget** and don t need extreme performance gains.
- **Consider an aftermarket throttle body instead if:**- You are **adding forced induction (turbo/supercharger)** or plan to **build significant horsepower (300 hp)**.
- You want **better throttle response, easier cleaning, and upgrade potential** (e.g., larger bores, better sensors).
- You are doing a **full engine swap or major mod** and need a throttle body that can handle higher airflow demands.
- You want **long-term reliability** with fewer restrictions (stock throttle bodies can fail under heavy load).
**Final Verdict:**For a **1999 Prix Valve with stock or minimal modifications**, the **Pontiac 17113576 throttle body is a practical and affordable choice**. However, if performance is a priority, **budget for an aftermarket upgrade** to avoid future limitations. Always pair any throttle body replacement with a **proper tune** to ensure optimal performance.
Clear all computer fault codes. Menu .: 6 MONTH MONEY BACK GUARANTEE. Transmissions:Replace the following with new parts: front pump and output shaft seals, pan gaskets filter. This part fits vehicles made in the following years 1999.
Adjust shiftier and kick down cables linkage if applicable. All the above installation should be in accordance with manufacturer guidelines including proper quantity and fill levels of fluids any technical service bulletins updates. B Failure caused by towing a trailer unless your vehicle is rated the manufacturer for. Warranty covers slippage, shifting failures and/or bearing noise.
Manufacturer Brand: Color: Position: Fitment Notes. Every part is cleaned, tested and inspected by experts. 3.Warranty is valid to original purchaser only. Flush or replace transmission cooler and lines.
Warranty is not transferable.Failure caused by or related to collisions, theft, vandalism any act of God. Unless specified as Universal this is a direct fit Fuel Injection Throttle Body. Throttle Valve Assembly 3.1L.
Engine warranty is contingent upon installation of new intake manifold gaskets. The words un examined or unchecked on the delivery note/docket are not acceptable. 4.This part may have accessories that are attached and must be removed or switched for proper installation. Engine installations follow the procedures:Replace following parts if applicable: timing belt, water pump, thermostat, spark plugs, fluids, oil pan gasket, and filter.
90 Day Replacement Warranty. Manual transmissions follow the same procedure as above if applicable. FAQ's: here. Shearing or breaking of teeth in a standard transmission is not warranted under any circumstances.