[Dessertrunner]

I measured the resistance of the close side of the coil and then put a resister between that wire and the centre to make the ECu think that the load was still there but what happened was the ECU picked up that I was screwing with it.
Trevor haven't forgotten your question for start,
The orange thing is the solded roll to hold the coil in a positon to be able to take a good photo.
I have attached 3 more photos so you can see exactly the part of the valve that moves then it should be easier for you to see what is happening in the first images.
The valve I think works on the princpal that the ECU doesn't assume that a give voltage will give a given open of close position but instead moes the voltages of the two wires to get the disired RPM. What I think happens is that the ECU has operation ranges that it works with in from the program coding but with out the load of the Auto oil being pumped around any change is two extreme.

My guess to come to terms with what I saying you are going to have to accept that this valve opens and closes on voltage change not by a "modulated signal" untill we can agree that that is how it works we aren't going any where.
Will you belevie me if we put a scope on the wire from the ECU to prove it.
Hope that more clearly explained it.