To get air out of your coolant, simply run the car(parked, in neutral) with the radiator cap on loosely with the heater blasting full-hot until the radiator fan comes on. Shut the car off and check your coolant level. If it went down, refill it and repeat the process. Put the cap on tight when you're done.
The IACV is on the back of the intake manifold and uses coolant temperature to control the idle speed. It idles the engine faster when the coolant is cold in order to help the engine warm up faster. If you get all the air out of your coolant, and you're sure you don't have any vac leaks, and you still experience a pulsing idle, the IACV is probably toast. Used IACV's can be had for $50-60, but I'm not sure as to your application, since I'm mainly familiar with Civics and Integras. All OBD-II Civics and Integras have interchangable IACV's, so that may also apply to Accords, but you'll have to doublecheck. The IACV is held on by two bolts with 12mm heads and has two coolant lines running to it.
Originally posted by Phat8186
throw me a freakin bone here
that doesn't exactly make me want to help you...