Throttle Position Sensor - Cable Drive Only

The FAST Electronics Throttle Position Sensor (TPS) Model 54020 is a cable-drive throttle position sensor engineered for GM LS-style engine platforms. This sensor delivers precise throttle blade position data to the engine control module, enabling accurate fuel delivery and timing control across the full operating range. As a critical component in LS engine fuel injection systems, the 54020 ensures responsive throttle response and consistent idle characteristics essential for both street and performance applications.

Cable-drive TPS units operate via direct mechanical linkage to the throttle body, translating throttle blade rotation into a proportional voltage signal. This direct-coupled architecture eliminates electronic throttle control variables and provides the mechanical simplicity preferred in carbureted-to-fuel-injection conversion builds and traditional LS swap installations. The FAST 54020 weighs just 0.19 lbs and measures 2.85 x 2 x 4.05 inches, making it a compact fit within tight engine bay configurations. Proper TPS calibration during tuning ensures the ECM recognizes closed-throttle (idle) and wide-open-throttle (WOT) signal boundaries, critical for smooth acceleration transitions and fuel mapping accuracy.

This sensor is intended for LS engine builders, hot rodders, and restoration specialists converting older vehicles to LS power or upgrading OEM fuel management systems. Whether supporting a naturally aspirated LS3 in a classic muscle car or a turbocharged LS9 in a performance street machine, accurate throttle position feedback is non-negotiable for stable engine control. Cable-drive sensors remain the standard choice in aftermarket tuning shops where simplicity, reliability, and tuning transparency are prioritized over electronic throttle body systems.