does anyone know where the location of Idle Air Control Valve on 2003 Camry 2.4L . I could not find it on throttle body.
IAC valve on ebay
IAC valve on ebay
There's nothing to cause buzzing or clicking around the throttle body unless something is loose and/or rattling.
For about $150, your local Toyota dealer will run a full diagnostic and give you a written estimate of anything that needs to be fixed. You can then choose whether or not to follow his recommendations or post the dealer's recommendations here and ask for help.
So the motor couldn't be going bad inside the throttle body causing the butterfly to click or the gears inside the TBThere's nothing to cause buzzing or clicking around the throttle body unless something is loose and/or rattling.
For about $150, your local Toyota dealer will run a full diagnostic and give you a written estimate of anything that needs to be fixed. You can then choose whether or not to follow his recommendations or post the dealer's recommendations here and ask for help.
I'm working on having a diagnostic test done like you suggested. I appreciate all your help and again I'm sorry for my lack of knowledge on electronic stuff. The high RPM is my issue still because one day it will start at 2000 RPM and the next it might be 1600 RPM. And I've been told that a 2000 RPM is way to high for a 03 but not for a newer vehicle. And now that noise I'm hearing has put more concerns to it not being normal. But you know more than me and I appreciate all you've doneOlder models: A TPS is used to know how much your accelerator pedal is depressed (hence the throttle plate opened) when the throttle is connected to the accelerator pedal by a cable.
Newer models: Yours doesn't have such a cable controlled throttle - rather it has a sensor connected to the pedal and an electronic throttle controlled by a stepper motor located inside the throttle body. The sensor replaces the TPS.
Again: What problem are you trying to solve? I've given you 2 options: provide OBD data using a $6 OBD sensor (read the internet how to do that) or go to a dealer. I cannot help further. Someone else may prove more helpful.