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I wandered if this was the case, I may be wrong here, but doesn't the ICV then open when you release the throttle which sort of negates this answer (the Throttle body is completely closed by the butterfly at idle).
So I then went back in and checked the continuity of the throttle position sensor (all OK).
Should have mentioned that the idle is OK after the 10 - 15 secs of throttle being held open.
Also when intially cranking the engine fires up for a second then dies so I am assuming (probably incorrectly) that the fuel supply rails still have some fuel in them.
I am still suspicious about the ICV but I still suspect that its the fuel supply/ventilation system that's at fault.
Cheers John
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