car just stops???

[kiwiboy]

Hi Guys,
I have a 2003 vectra cdxi 3.2 v6 have an issue the car will just stop when i am driving along normally when im merging with traffic or at a low speed. It doesn't start shunting like a fuel issue it just shuts down. Then it wont start and doesn't even kinda start. Then i will leave it for a few minutes and away it will go again and have no problems rest of day OMG What is it????
Took to auto electrician he found nothing can anyone help me with this b4 i head to stealer/dealers???:reface:

Thanks Greg

[chrisvectra]

very unusual for a 3.2 to have issues
when was the last time the car was serviced