Originally Posted by importkid

At your local parts store you will see seafoam with a straw on the can. It's a dollar or two more but I believe it's called deep creep. (the only seafoam with a straw) and remove the air box lid then the filter just pulls out (if OEM) then loosen the screw and gently remove the small side line from the intake tube and move it off to the side. If you have an 05 or older you will have an air pump but I think the hose is long enough for this. Just use the throttle cable (this is shown in detail in the IAC cleaning DIY) and open the throttle body flap all the way and spray a liberal amount, but do not drown it and then use an old tooth brush or a nylon gun scrubber to get all the gunk off. It will be difficult to start your car the next time you try but that is okay. You can also use this product in your IAC cleaning which is very simple.

Remember to double check everything is hooked back up and also check the air pump clamp (if applicable) at the bottom of the cooling fan. Mine ended up coming loose from its holding and my fan would tap it making a horrid noise. When you restart the car do not hold the starter until it starts. Just go at it normal and then let off and try again. Sometimes a slight amount of throttle pressure will help, but I try not to use it because there is little oil in the head when the car has sat.