when i first start my zafira of a morning it will not pull off it just dies for about 5 minutes then will drive all day ok as long as i dont leave it to go cold. also i have a jerk every now and then when i drive along

philip, January 2006

sounds to me like the cold start valve, as for the jerk throw him out on the moterway!!
only joking it all sounds like it could do with a tune up, but you could check to see if you have any air leaks in the intake system, (from the airbox to the inlet manifold)

Mike Payter, May 2006