Optima idles high after Throttle Position sensor replacement.
I replaced the throttle position sensor on my 2005 KIA Optima about a month ago after reading a trouble code. Since I replaced it the engine now idles at 1100 RPM at first start and, after I drive around and then put the vehicle back in park, the engine idles anywhere from 1500 to 2000 RPM. I read online that this has happened to others that have replaced the TPS and it was suggested that they adjust the throttle by loosening the screws and turning the sensor in its mounting point. The screw holes are not elongated to allow such an action. I removed the sensor and checked to make sure that the flanges rested in the correct position and then screwed the sensor back in place. I still have the same end result. I did replace the old sensor back on to the motor to see if there was any change and found none so I swapped the new sensor back in to place. I have changed nothing else on the motor besides the TPS.