revs sticking on hot re-start

when i switch of the engine when it's at 90'c and re-start after about 5-10 mins the revs hold at 2000rpm for about 3-4 secs, i have cleaned out the idle speed control valve but no change.

[simontaylor]

Your not driving your car hard enough!
Mine used to do that, but after this weekends visit and blast around Croix it's fixed itself. 4 or 5 sessions of 20 minutes circuit racing at 105 degrees, what a well behaved car.

sorry but i can't physically get it to go any harder! another flat out run on the motorway today again ........155!

Yep, my old turbo used to do that as well... no idea.