Suburban 1/2 Ton 4WD V8-350 5.7L (1985)
![background image](/chevrolet/suburban_1/2_ton_4wd/v8-350_5.7l/Page-686001.png)
Throttle Position Sensor: Description and Operation
The TPS is mounted in the carburetor body and is moved by the accelerator pump linkage. When the throttle blades are closed, the TPS provides a low
voltage (under 1 volt). This voltage signal will increase to up to 5 volts as the throttle blades are opened to wide open throttle. These voltage signals
provide an indication of throttle position to the ECM.