914Rubber 1.7 L Throttle Position Sensor Circuit Board (4 pin Connector) for Porsche 914 (1970-71)
PMB Performance has been the backbone of Porsche 914 restoration for two decades, and our near-20-year partnership with 914Rubber makes us the world’s leading retailer of their SKUs. We sell more 914Rubber parts—seals, hoses, and electrical components—than anyone, driven by our passion for keeping these mid-engine icons thriving.
This 914Rubber throttle position sensor (TPS) circuit board with a 4-pin connector (part number 022906111E) is engineered for Porsche 914 1.7L models from 1970 to 1971 (D-Jetronic fuel injection, chassis numbers 470-29-00001 to 471-29-99999). It’s a vital piece of the Bosch D-Jetronic system, feeding throttle position data to the ECU to fine-tune fuel delivery and ignition timing. If your 914 cuts out at certain throttle positions or stumbles on acceleration, this board can revive its razor-sharp response.
Why It’s Critical
Housed in the throttle valve switch on the throttle body, the TPS board tracks throttle movement, sending analog signals to the ECU to balance air-fuel ratios. Over time, the board’s contact tracks wear from the wiper’s motion, causing erratic signals that lead to hesitation, rough idling, or power loss. Our 20 years of 914 expertise pinpoint a worn TPS as a common cause of D-Jet drivability woes. This 914Rubber board, secured with silicone adhesive instead of rivets, restores precise control to your 1.7L’s injection system.
Technical Specs
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Material: High-grade PCB with reinforced copper traces, resistant to vibration and the 914’s engine bay heat (up to 80°C).
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Function: Outputs variable resistance (0.4kΩ to 4.5kΩ) to signal throttle angle, targeting ~14.7:1 AFR at cruise and richer mixes under load.
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Fitment: Exclusive to 1.7L 914s (1970-71) with 4-pin D-Jetronic TPS (Bosch 0 280 120 042). Incompatible with later 5-pin or L-Jetronic systems.
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Pro Tip: Use silicone adhesive for installation to ensure a firm hold. Inspect the throttle switch wiper for wear and pair with 914Rubber’s TPS gasket (we carry it) to prevent air leaks. Verify resistance across pins 1-2 and 3-4 for smooth variance during testing.
Why PMB Performance and 914Rubber?
We’ve spent years elbow-deep in 914s, from rebuilding D-Jet harnesses to dialing in idle mixtures. Our partnership with 914Rubber is built on trust and a shared commitment to OEM-grade quality. We sell their entire line because we know 914s demand parts that fit perfectly and last. This 4-pin TPS board is no exception—designed to keep your early 914’s fuel injection on point.