Buy Buick Lucerne Throttle Position Sensor Connectors

The throttle position sensor (TPS) connector in a Buick Lucerne is a vital component of the vehicle's engine management system. It facilitates communication between the throttle position sensor and the engine control module (ECM), ensuring optimal engine performance. A malfunctioning or damaged TPS connector can lead to various engine issues, including poor acceleration, erratic idling, and increased fuel consumption. (Turbo Buick Forum)

The TPS connector for the Buick Lucerne is compatible with several model years, specifically from 2006 to 2011. It is designed to fit various engine configurations, including the 3.8L and 3.9L V6 engines. The connector typically features three terminals and is often color-coded to assist with proper installation. For instance, the 2009-2010 models may have a black and purple connector with a 3-terminal female configuration . (Parts Geek)

Common part numbers associated with the TPS connector include 12102748, 12126473, and 15306432. These identifiers can be helpful when sourcing replacement parts or verifying compatibility. (Parts Geek)

A faulty TPS connector can manifest through several symptoms: (Reddit)

• Erratic Idling: The engine may idle too high or too low, indicating communication issues between the TPS and ECM. (eBay)
• Stalling: Inconsistent throttle response can cause the engine to stall, particularly during acceleration or deceleration.
• Poor Acceleration: Delayed or unresponsive acceleration can result from a malfunctioning TPS connector.
• Check Engine Light: Diagnostic trouble codes such as P0122 (TPS circuit low voltage) or P0123 (TPS circuit high voltage) may be triggered.

If you experience these issues, it's advisable to inspect the TPS connector for signs of wear, corrosion, or loose connections. (Shoptalk Forums)

Replacing a faulty TPS connector involves several steps: (YouTube)

1. Locate the Connector: The TPS connector is typically found on the throttle body assembly.
2. Disconnect the Battery: Before working with electrical components, disconnect the vehicle's battery to prevent electrical shock or short circuits.
3. Remove the Old Connector: Carefully detach the old connector from the TPS, noting the orientation and wiring configuration.
4. Install the New Connector: Connect the new TPS connector, ensuring it matches the original in terms of pin configuration and orientation.
5. Reconnect the Battery and Test: After installation, reconnect the battery and start the engine to verify proper operation.

For a visual guide on replacing a throttle body plug/wire, you can refer to this tutorial:

Several components are related to the TPS connector and may require attention during maintenance:

• Throttle Position Sensor: The sensor detects the position of the throttle valve and sends this information to the ECM.
• Throttle Body: The throttle body controls the amount of air entering the engine, influencing engine speed and performance.
• Accelerator Pedal Position Sensor: This sensor monitors the position of the accelerator pedal, providing input to the ECM for throttle control.

Issues with any of these components can affect engine performance and may be related to TPS connector problems.

Q: What is the function of the TPS connector in my Buick Lucerne?

A: The TPS connector enables communication between the throttle position sensor and the engine control module, allowing the vehicle to adjust engine performance based on throttle input.

Q: How do I know if my TPS connector is faulty?

A: Symptoms of a faulty TPS connector include erratic idling, stalling, poor acceleration, and the illumination of the check engine light with related diagnostic trouble codes.

Q: Can I replace the TPS connector myself?

A: Yes, with basic automotive knowledge and tools, you can replace the TPS connector. Ensure you follow proper safety procedures, such as disconnecting the battery before starting work.

Q: Where can I find a replacement TPS connector for my Buick Lucerne?

A: Replacement TPS connectors can be sourced from various automotive parts suppliers. It's essential to verify compatibility with your specific vehicle model and engine configuration.

Q: Are there any common issues with TPS connectors in Buick Lucerne vehicles?

A: Common issues include corrosion, loose connections, and wear due to engine vibrations. Regular inspection and maintenance can help prevent these problems.

Q: What tools do I need to replace the TPS connector?

A: Basic tools required include a socket set, screwdrivers, and possibly a wire stripper/crimper for any necessary wiring adjustments.

Q: Is it necessary to reset the ECM after replacing the TPS connector?

A: While not always required, resetting the ECM can help clear any stored trouble codes and allow the system to recalibrate to the new sensor input.

Q: Can a faulty TPS connector cause engine performance issues?

A: Yes, a malfunctioning TPS connector can lead to improper throttle response, affecting acceleration, fuel efficiency, and overall engine performance.

Q: How often should I inspect the TPS connector?

A: It's advisable to inspect the TPS connector during regular vehicle maintenance intervals, especially if you're experiencing related performance issues.

Q: Can I use a universal TPS connector for my Buick Lucerne?

A: While universal connectors may fit, it's recommended to use a part specifically designed for your vehicle model to ensure proper fitment and function.

For more detailed information on the Buick Lucerne's electrical systems, including wiring diagrams and service manuals, you can refer to the following resources:

• 2006 Buick Lucerne Wiring Diagrams
• 2009 Buick Lucerne Repair and Diagnosis Manual

These documents provide comprehensive details on the vehicle's electrical systems, which can be invaluable when diagnosing and repairing issues related to the TPS connector. (Turbo Buick Forum)