Cleaning Throttle Bodies

 

I DO NOT RECOMMEND REMOVAL OF THE THROTTLE BODY for cleaning, if you have a DBW (Drive By Wire) throttle do not force the plate open at all with your hand or tool this can throw off the computers sensor of throttle position as well as if you unplug it. to clean a dbw just tun the key to ON position and have a helper press the gas pedal to clean the system. if you unplug or tamper with these DBW systems you may have to find someone with the scan tool or take it to the dealer to fix.

  I recommend cleaning a throttle is when it's sticking. I've personally never seen cleaning a throttle body correct an idle issue. , clean parts are usually working parts, but in the case of the throttle, I only recommend cleaning the throttle body if you notice your gas pedal sticking or hanging up when you use it.
Your intake gets dirty because of one main reason: the PCV (positive crankcase ventilation) system. . The PCV system helps vent crankcase pressure and reduces emissions. Whenever you have moving parts in an enclosed space, like pistons moving inside an engine block, you need to vent the pressure that inevitably builds up.
I have a video of how to properly clean the throttle body on car at http://youtu.be/pxigPywdDEM