Whits end with Mondeo Idle fault

[Rotor]

Hi anyone here have any experience with a MK3 1.8 Mondeo !
Have changed TPS, IACV and cleaned the throtle body till like new, but still have a reving problem, the car will run up to 3rpm on its own for about 3 seconds then setle, and when reved the revs take 1-2 seconds before dropping away after lifting off. I have checked the throtle cable linkage and its not binding in anyway along with cruise control linkage also ok.
Where to next I'm stumped? Ive booked in for a main dealer to have alook but that will not be till next Friday.
Any ideas at all would be really helpful
P.

[Rollcage]

Vacuum pipe leak might be worth checking.

[Rotor]

Cant seem to find any vac. pipes to and from the plastic manifold
Unless theyre underneath somewhere ?
Thanks for the very quick reply though.

[martycossie]

bet its the brever pipe under inlet manfold

[Rotor]

Would I need to remove the manifold to see/get to this?