This is everything i have done in the last 4 months. I will try to explain this the best i can. I have a 01 is300 auto with 170k on dash. I got a TPS code so i went and got that. When i replaced the TPS car drove fine then gave me the APPS code. Went and got the APPS. Installed the APPS car drove fine for a week. Then the car started giving me the TPS code and the APPS code and a Throttle motor lock code (IACV). So i went and got that. Installed and the car drove fine. Now i get all 3 codes so i decided to clean out my TB. And it actually worked. For a week or 2 no codes nothing. I get the codes intermittently sometimes it turns on and wont get a throttle response,till i turn the car off n back on n it drives fine. Sometimes the lights are on and they turn themselves back off. I went to get a new battary,when i went to turn the car on it idles really high (2k) and is in limp mode i tryed adjusting the TPS and nothing i littlary disconnected all 3 sensors while car running n nothing changed at all no idle drop nothing. Can someone please help me im ready to leave this car abandoned on a railroad.