1997 Dodge Intrepid TPS sensor

Electrical problem
1997 Dodge Intrepid 6 cyl Front Wheel Drive Automatic

I have a 97 dodge intrepid. It will smoke a little bit in park when it is givin gas. Once u put it in drive about 100 ft later it starts to smoke terrible. I was told to that it could be the tps sensor. When I got home I put my meter to it and there is no voltage coming from the sensor plug. Would I have to have the key on to check this? What else could this be and I know the engine idle control sensor is bad but I've replaced it.