Posts Tagged: throttle position sensor

Throttle position sensor TPS

Diagnose and replace throttle position sensor TPS What does a throttle position sensor do? A throttle position sensor is a potentiometer that changes voltage as it moves. It’s tells the ECM how far the driver is opening the throttle. In older vehicles it’s mounted right on the throttle body. However, in newer cars, the TPS is located right on the gas pedal inside the cabin. The manufacturers eliminated the cable to the throttle body and rely instead on stepper motors to open and close the throttle plate. What goes wrong … Read More