2019 5.0

Just a quick question:
What is the default position of the runners with engine off, no vacuum to the actuators.

Are the runners open or closed?

 

1. The PCM monitors the TP sensor, cylinder head temperature (CHT) sensor, and CKP sensor signals to determine activation of the IMRC system. There must be a positive change in voltage from the TP sensor along with the increase in RPM at the correct engine temperature to open the IMRC valve plates.
2. The PCM uses the information from the input signals to control the IMRC solenoid based upon changes in the throttle position, the engine temperature, and the RPM.
3. The PCM energizes the IMRC solenoid with the ignition ON and the engine running. Vacuum is then applied to the actuator to pull the valve plates closed.

 

Thanks. So the default position is open, I take as your answer.

 

I think "by default" could be misleading.

The system is called Charge Motion Control Valve and is explained by a (non-Ford) engineer:

 

I've seen this video and thanks.