I don't know where the idle motor is located and how it should be cleaned.
What and where is the idle motor on 2000 Mercury Villager
look for the air engine filter and follow the boot to the engine there you will find the idle motor is like a butterfly that opens and closes as you press the gas pedal.
On my 94 villiger the idle air control motor is on the top left side of the intake manifold. It's a tight squeaze up there but do-able. I replaced mine a few years ago.