When the intake manifold runner becomes stuck in the open position in a 2007 Ford Focus, You will see the code P2004 appear on Your dashboard. This means that the intake manifold runner control actuator, or IMRC, on engine bank one has become stuck. The runner control solenoid operates using a little flap that opens and closes frequently, while air is running through the system. So, if that flap becomes stuck at any point, the runner will become trapped in place, and air will keep running through indefinitely. This can be resolved by adjusting the runner until it corrects. Symptoms of this issue that You may experience include poor engine performance, lowering rpms, bad fuel efficiency that keeps getting worse, and surging or lurching forward of the engine itself.
Eddie E.
April 9, 2020
On the 2007 ford focus if the intake manifold runner control is stuck open means that the intake manifold runner control solenoid may need to be replaced or you may have a crack in the vacuum hose attached the runner control.
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