Throttle Position Sensor

Idle (normal) 0.45 to 0.95 volts
(maximum) 1.25 volts
Wide Open Throttle 4.0 to 4.5 volts

The Throttle position Sensor is not adjustable on this engine but should read below 1.25 volts at closed throttle and about 4.5 volts at wide open throttle.