Dorman 977-034 Throttle Position Sensor

Overview of Dorman 977-034 Throttle Position Sensor

The Dorman 977-034 throttle position sensor is designed for precise throttle body monitoring in various BMW models. This sensor ensures accurate throttle input readings, contributing to optimal engine performance and emission control.

• Constructed from durable black plastic for reliable operation
• Throttle body mounted for direct and accurate measurement
• Features a 3-pin female electrical connection for secure wiring
• Non-adjustable design for consistent factory calibration
• Includes one throttle position sensor and one o-ring for installation

Detailed Product Description

This throttle position sensor by Dorman is engineered to meet the specific requirements of BMW vehicles such as the 318i, 325i, 530i, and M3 models. The sensor mounts directly on the throttle body, providing real-time data on throttle position to the engine control unit (ECU). Its black plastic housing offers durability while maintaining a lightweight profile. The 3-terminal pin configuration with a female electrical connection ensures compatibility with factory wiring harnesses, facilitating straightforward installation. The sensor is non-adjustable, maintaining consistent throttle response and engine performance as intended by the manufacturer.

Compatible Vehicles and Common Applications

• Compatible with BMW 318i, 318is, 318ti, 320i, 323i, 325i, 325is, 328i
• Suitable for BMW 525i, 530i, 540i, 740i, 740iL, 840Ci, M3, and Z3 models
• Used to monitor throttle position for accurate fuel injection and ignition timing
• Helps resolve issues such as erratic idle, poor acceleration, and engine stalling
• Addresses throttle-related diagnostic trouble codes (DTCs) in BMW vehicles

Installation Notes and Tips

When installing the Dorman 977-034 throttle position sensor, ensure the throttle body is clean and free of debris. The included o-ring should be properly seated to prevent air leaks. Use the factory wiring harness with the 3-pin female connector to avoid electrical issues. Since the sensor is non-adjustable, no calibration is necessary after installation. Verify proper sensor operation by checking throttle response and engine performance post-installation.

Quality Assurance and Warranty

Dorman manufactures this throttle position sensor to meet or exceed OEM specifications for fit, form, and function. The sensor undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship.