Thanks Steve

OVP is brand new.

I cleaned the ICV and the shutter is moving I checked it by applying 12V on it - but smothly I dont know how to do it.

As I did notice that screw I wanted to know its function because I believe that with the time the play around the shutter worns out and allows more air leak (that is my guess) that cannot be compensated by a closure of the ICV.

As I have no spare nor bad ICV for try. I was expecting someone to have any experience or a bad defective ICV and try to move the screw and see if it closes the shutter.

I have not yet adressed the Pot and that will be done one of these days.
I tryied several time to take out the caps that hide the screw and was not able to remove them.
Do you know how to do it? Have yiu any picture of them to see how they gripp.
Do they become brittle with ageeing?
Is there a way to get them off?

any idea about the two pins on the Air mass meter?