Walker 200-1378 Throttle Position Sensor

Throttle Position Sensor for Hyundai Sonata

Walker Products 200-1378 is a throttle position sensor built for throttle body mounted applications and direct engine management service. It is listed for 1999-2001 Hyundai Sonata models and uses a 4-terminal, rectangular female connector for a direct-fit style replacement.

Walker Products has supplied fuel system and engine sensor components since 1946, with manufacturing and engineering support focused on OEM-level specifications and application accuracy. The Walker Products line includes throttle position sensors and other engine management parts for repair and maintenance work.

• Fits 1999-2001 Hyundai Sonata, N/A
• Plastic sensor housing
• Throttle body mounted design
• Adjustable sensor configuration
• 1 rectangular female connector
• 4 male blade terminals
• Mounting hardware not included
• Mounting bracket not included

Detailed Product Overview

This throttle position sensor monitors throttle plate movement and sends position data to the engine control system. Walker Products 200-1378 is a practical replacement for Hyundai Sonata throttle body service when the original sensor shows wear, signal inconsistency, or drivability concerns. This part cross-references Standard Ignition TH399 for the same application.

Common Symptoms It May Address

• Erratic or delayed throttle response
• Rough idle or unstable engine speed
• Hesitation during acceleration
• Check engine light related to throttle position signal faults
• Poor fuel control caused by inaccurate throttle input

Installation Notes

Verify connector shape, terminal count, and throttle body mounting style before installation. Because this sensor is adjustable, follow the vehicle service procedure for alignment and calibration after mounting. Inspect the throttle body and wiring connector for wear or contamination before replacing the sensor. Confirm fitment for 1999, 2000, and 2001 Hyundai Sonata applications using the vehicle’s original sensor configuration.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to meet or exceed OEM standards and specifications. The company is ISO 9001 and IATF 16949 certified, with product management and engineering support used to maintain application accuracy and technical consistency. Part number 200-1378 is backed by Walker Products’ manufacturing and technical support resources.