Ford auto mechanic?

[Ether]

Hi Mike,

Cannot achieve/maintain higher speed with a higher throttle setting.

If it had a massive air intake leak, would it idle smoothly, quietly, and at the correct speed (as it does) ?

The idle air control valve controls the engine idle speed.

The engine idles smoothly, quietly, and at the correct speed. Symptoms do not appear consistent with a faulty idle air control valve.

[Mike dennis]

if it is only idling smoothly for a second or two then yes it can still do that, but if you get more than four or five seconds before it starts dropping then it probably won't be the issue.