M5 e60 fuel pump cutting out / control module
My problems are when I start the car, the fuel pump comes on then cuts out for 5 seconds then comes back on again but by this time it's thrown up a error code.
Another issue is When I put my foot down I get low fuel pressure on bank.
Also the car is only using half of the fuel in the tank it's intermittent for fuel being pumped over to each side of tank, so when I have half a tank I can't get any fuel until it decides to pump the fuel over then I run out, so I'm carrying fuel cans in the boot.
I'm thinking the relay maybe shot/broke, but I don't know where it is, or even if there is one.
Or the fuel pump control module maybe bad ??.
Any help would be appreciated.