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Home >> Chevrolet >> 1988 >> Spectrum Base, 2D Hatchback, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Feedback Carburetor System >> Operation >> Input Sensors >> Throttle Position Switch (TPS) W/Idle Switch
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Throttle Position Switch (TPS) W/Idle Switch

The TPS assembly includes a position sensor and an idle switch. The idle switch is either open or closed, idle or off idle. The position sensor functions as a variable resistor, changing signal to ECM as throttle position changes.

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