SE Charge Cooler IAC valve

[G_Reaper]

I have for some time been having trouble with the engine management on my SE (Which is why I fancy a good old fashioned carb model). Does anyone know a sure fire way of testing the 'Idle Air Control Vave' On an SE. I have tied testing it with a digital volt meter which shows the correct resistance accross the terminals but when a current is supplied to the terminals the plunger wiggles but does not move and it is stiff in the extreme to move almost unmovable. Any thoughts?

[G_Reaper]

Thanks for your response.
The car has covered 46,000 miles I have recently fitted a new 0xygen sensor and temp sensor. Having removed the IAC valve and pushed its plunger in to its smallest length and re fitted it & re set the ECM the car now idles. The problem being the car idles high and splutters and coughs when asked to accelerate resonably quickly. I have no EBP valve as I have removed the Cat fitted a sports exhaust and blanked the vac supply pipe.
When the car would not idle when hot the car had the full performance expected of an SE. Now the car idles when hot the car has lost its brut strength.

I am hoping that the local Lotus dealer is going to put it on his Tech 1 free, he has stated he does not want to work on the car as he hates the engine managment system used on the injected Esprits and rekons when they go wrong they are a night mare to sort out but he will supply a print out from the tech 1. He is also going to check the fuel presure as the fuel pump does seem to whine quite loudly behind you when the engine is running.

Any further thoughts?

[G_Reaper]

Thanks again for your response. Where is the fuel filter situated? I think I am getting full boost, But I suspect that the IAC valve is not functioning to its full extent and allowing air past it when it should be shut thus making the fuel mixture too weak. does this sound reasonable.