Where is the Idle Air Control Valve located on a 2001 Mercury Mountaineer 5.0L Engine?

The Idle Air Control (IAC) valve on a 2001 Mercury Mountaineer with a 5.0L engine is typically located on the top of the throttle body. The throttle body itself is situated at the intake manifold, near the engine's front.

To be certain, you should:

* Consult your owner's manual: This is the best source for location specifics for your vehicle.

* Use a repair manual: A Haynes or Chilton manual for your year and model will have diagrams and detailed instructions.

* Look at online diagrams: Search for "2001 Mercury Mountaineer 5.0L engine diagram" to find images showing the throttle body and its components.

It's a relatively small valve, often cylindrical and electrically connected. Keep in mind that access might require removing some air intake components.