You need to clean the throttle body also make sure that you check the air filter. If it does not help check if the throttle position sensor works properly.
Once the engine warms up it should be in between 600-800 rpms.
13-20 psi at engine idle 23-31 psi key on engine off
You can't. Toyota Camry uses throttle position sensor to adjust idle. If your car does not idle you need to check computer for error codes. If you do not have any, most likely you will have to do tune up on your engine and maybe even fuel system. But starters check the air filter and replace if you did not do that in a while or if it looks dirty.
This is because the engine has not yet fully warmed up. The computer increases the idle speed to prevent stalling when the engine is cold. To correct this, wait for the engine to warm up, or shut it off.
May be throttle plate stuck--with engine off try to "free" up with screwdriver
Its old, google how to clean (ICV) idle control valve.
car run good but has a little vibration idle or running
Check the idle sensor if you have one.
Connected to, and under ther Throttle body. Go to YouTube and type IAC on 2000 Camry.
I have 200,+ miles on the car. I change the plugs and wires yet it runs rough at idle and runs smooth at crusing speed. What can i do?
Loud idle? no, not turn over ,yes
Most likely because it can't idle. You need to check if the idle control valve is working (if you have one), also try adjusting the idle control screw.