It turns out that the relay hasnt solved it. Although when it cuts out i can still hear the engine is on, the rev counter goes back to 0. The only thing i can say its like is knocking it into neutral and rolling to a stop. Whilst your on the roll if you turn it on and off it is ok again for about 10 mins. Could it be the immobiliser? Also over the weekend i have checked as much wiring as i can access for breaks, nothing came up, and also cleaned all the connections.
Another problem thats also turned its head up dont know if its related is when shes warm and you park up and come back say half an hour later it initially idles at 2000rpm but after driving round it settles back to 1000. I have read topics about the idle valve causing this but this is a newish idle valve been cleaned inside and out it.
The next thing is to wait till thursday my local vw garage has mechanic who has been there for 30 years so hopefully he will know. Any help in the meantime would be greatly received. Cheers.