How do you adjust throttle position sensor on 1987 Buick century 3.8 liter?

To adjust the throttle position sensor (TPS) on a 1987 Buick Century with a 3.8-liter engine, first, locate the TPS mounted on the throttle body. Use a multimeter to check the voltage output of the sensor, which should be between 0.5 to 0.6 volts at closed throttle. Loosen the screws securing the TPS, and rotate it slightly until the voltage reading is within the specified range. Once adjusted, tighten the screws securely and recheck the voltage to ensure it remains within the desired range.