Originally Posted by blacktop

The engine temp before starting was the same as the outside temperature or close to it. The throttle position said 17.2% before I started and after it started it said 15.1 percent and after it's warmed up it said 13.1% . Pressing the throttle does not change the percentage with key on engine off.
do you think I could be a crank position sensor? Where is the sensor on these trucks