just realised that you could be rite as wen engine gets to optimum temp the speedo drops to nuffin and then the missfires start ie wen engine gets warm coil pak plays up will keep u posted wen change pak
hi mate if it was a faulty coil pack would it not be like that all the time through every gear and do it on initial start up.......as it also hesitates has a miny fit thru 1st and 2nd gear ie missfire when the lights are off in the day time