Caprice V8-307 5.0L (1987)
Throttle Position Sensor: Description and Operation
Sensor--mounted on the carburetor body and actuated by the accelerator pump lever or a cam on the throttle shaft--sends a varying DC voltage
signal to the ECM representing throttle position.
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When the throttle plates are closed sensor output is less than 1.0 Volts.
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As plates are opened sensor voltage rises to a maximum of 5 volts.
