I have the 1.8 AAM
It will work fine I bet and you can manually pull the cable and the car revs just fine...i have a feeling that this is a computer issue for some reason...probably caused by the ECU getting info and then adjusting on it's own???I can't eplain it any other way really...and probably caused by some sort of leak somewhere...
I used to burn just 6.8l/100km but this has gone up over the last two years and now I burn around 8.5-9l/100km...city driving is a killer for me now...

yay! I will be changing the dizzy cap, rotor and new leads..but I feel that the problem will still persist..
I get the smell of fuel from time to time coming through the vents...hope this is not happening to yourself...:)and not all the time but when i deaccelerate or accelerate quite quickly...(yay!)
Anyways i am only in Ascot so you are not far and maybe if you want we can meet up and try to solve the problem somehow. as we both have the same concern....maybe we can find a common fault on both vehicles and that may be the cause!