Throttle Position Sensor

The sensor is a variable resistor control, mounted on a bracket on the right side of the carburetor. With a reference voltage applied by the ECA, a signal is sent to the ECA, which classifies the signal into one of 3 modes:

• Closed throttle (idle or deceleration).
• Part throttle (cruise).
• Wide open throttle (maximum acceleration).

The sensor has slotted mounting holes to permit rotational adjustment. If sensor is replaced or if curb idle speed is adjusted, sensor must be positioned correctly or erroneous throttle position information will be sent to the ECA.