Nissan Repair: nissan priemera diesel, fuel pressure gauge, fuel pump relay

Question
hi  my nissan priemera keeps on cutting off but its not all the time it cuts off when it wants to also the engine management light comes on and then goes off please can you help

Answer
Aumar,

First you need to get the system checked to see what code the computer is storing.  Second, I would be looking at the fuel pump and fuel pump relay to make sure they are working properly.  You could hook up a fuel pressure gauge to see if the pressure drops when the engine shuts off.  This would indicate the relay or the pump going out.  This is where I would start.