well the doblo is back to playing silly buggers with the hunting revs and cutting out
but i noticed something wierd , driving along it cut out and when i turned the ignition off then turned the key the engine restarted without turning the key fully and engaging the starter motor,
,then everytime i was at a junction i had to keep restarting it, then called in a shop for 5 minutes and came back out and it started first time and ran lovely again