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I had intake off as I installed new coils and plugs. I decided to clean throttle and there appears to be no IAC. I guess electronic throttle regulates idle speed too. Another thing is one cannot move the throttle plate manually. I had to spray the throttle after reconnecting and even then it was difficult to clean as the engine would not run with the intake hose off. Here is the throttle plate before cleaning:
Image
 
You can move the throttle plate manually, but it will throw the ecu out of wack. The best way to move the throttle plate without running the car is to turn the key to the on position and have someone inside the car step on the gas pedal.
 
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