To be certain, you'll need to:
1. Identify your Ford Ka's engine: This information is usually found on your vehicle's registration documents or a sticker in the engine bay.
2. Consult a repair manual specific to your year and engine: A Haynes or Chilton manual will show you a diagram of the engine and pinpoint the IACV's location. Online resources like forums dedicated to Ford Ka's can also be helpful, but always double-check against a reputable manual.
Without knowing the exact year and engine code, providing a precise location is impossible. However, start by looking closely at the throttle body; the IACV is usually a small, cylindrical component mounted directly on or very near it.