Here is some more about the IMCC
Theory Operation
The Intake Manifold Communication Control (IMCC) actuator in the intake manifold controls the length of intake air path, depending upon engine RPM. With engine speed less than 3750 RPM, the IMCC actuator is energized, improving torque output. At more than 3750 RPM, the IMCC actuator is de-energized, increasing airflow while improving high RPM performance. The PCM monitors the IMCC actuator at all times.
During wide open throttle, Wide Open Throttle A/C Cut-Off (WAC) circuit, interrupts power to the A/C compressor clutch. The A/C clutch remains off for about 3 seconds after returning from Wide Open Throttle (WOT).
- Mitchell On Demand
-- In other words, it looks easier to remove and dupe than the IMRC.
I have always wondered why my 99 aluminum semi-split port 3.0L upper intake at the opposite end at this blank plate bolted onto it. Appears not the first time Ford has used this as the IMCC is shaped identical to the blank plate on my 99.
