TPS Switch for Electric Choke Carbs

The Holley TPS Switch for Electric Choke Carbs (Model 534-202) is a throttle position sensor designed specifically for Holley's electric choke carburetor systems. This component bridges the gap between classic carbureted engines and modern engine management, allowing vintage and street-strip vehicles to benefit from precise choke control without sacrificing originality. Whether you're restoring a muscle car, tuning a hot rod, or maintaining a classic truck, this TPS switch delivers the dependable choke modulation that fuel-injected engines take for granted—but in a format compatible with traditional carb platforms.

The throttle position sensor operates by monitoring intake manifold vacuum and engine load, then signaling the electric choke element to adjust enrichment as needed during cold starts and warm-up cycles. This real-time feedback prevents the overly rich condition that plagues manual chokes and eliminates the guesswork from carburetor tuning. The compact assembly measures 5.5 x 2.8 x 5.6 inches and weighs just 0.45 pounds, making it a direct bolt-on with minimal underhood footprint. Holley's engineering ensures consistent response across varying ambient temperatures and altitude conditions, a critical advantage for street-driven and competition vehicles operating in diverse environments.

Mechanics and engine builders favor this TPS switch for applications where electronic fuel injection is impractical or unwanted—late-model carb conversions, vintage drag racing, and restoration projects where authenticity matters. Installation pairs seamlessly with Holley electric choke carburetors, requiring only basic mechanical knowledge and standard hand tools. This component is essential for anyone seeking improved cold-start reliability, reduced emissions, and smoother idle quality without abandoning the simplicity and tuneability that carbureted engines offer. The 534-202 has become the go-to choice for builders who demand old-school hardware with modern performance logic.