Nissan Almera Tino cuts out while driving?

I have had this car for a while now, and have had problems with the fuel line which has been corroded. The enine warning light has been on for 2 years now but intermitantly turns off once taken to the garage. The new problem is the car completely cutting out when driving (usually while slowing down to turn) The power steering and engine completely cut out. However by turning the ignition off and on it jumps back into life. Does anyone have any idea what's causing this problem?