Hooked scanner up to car and at first pulled codes;

25 lean exhaust
41 throttle position sensor or circuit

Replaced TPS and the codes went away. Now a new code has come up;

47 sub throttle position sensor/ckt

The car runs great with the exception it tends to smoke a lot. Doesnt seem to be burning oil or coolant. Am I chasing a dead horse trying to clear up the smoke by fixing the sensors?