My Zafira 1.8 v reg suffers from hesitation when pulling away. As you let the clutch out, increase the revs the engine dies and the car hesitates, apart from this the car drives fine. Somebody advised me to clean the inside of the throttle body/ butterfly, this worked like a charm but 3 months later I am having to do it again. The idle control valve is part of the throttle body, not separate on the side. I phoned Autovaux about a replacement part, they seem to know about this problem and sell about 6 a month. The new part is about £150; I don't mind spending the money if it provides a long term cure. Has anybody else had similar problems? Thanks Howard