Ok, I have taxed the car today to give it a run. As stated originally, the car stalls with no throttle. When driving it, seems to hunt between 1000-2000 revs. Ie it will cruise happily at 2000 rpm but then it feels like it gonna stall so you have to give it a little more throttle. When I got back home, the car idled but was dropping to nearly cutting out then reving to 1100rpm then dropping and so on until it eventually cut out.

I tried adjusting the base idle screw when cold, but winding it in made no difference (idle valve disconnected). That fact that it feels like its hesitating when driving too, makes me think TPS. Seems fine when under accleration, and stops hesitating between 1000-2000 when depressing throttle pedal past half way.

gonna try adjusting that over the weekend. Is there anyway of testing it with it disconnected??