Ign on, engine off, high pitched noise

[jjl]

If I have the engine off, the ignition on, I can hear a slight high pitched sound under the hood.

When I pulled into the drive tonight the car died. It will start but runs really rough(sounds like about 1 cyl only) and if I use any throttle the car dies. When the motor stalls I can still hear this high pitched sound and it only goes away when I turn off the ignition.

Any help would be greatly appreciated, I need to get this car going again.
It is a 2002 vx, auto, 6 cyl.
Thanks
Jeremy

[greenacc]

check your fault codes, and all the ignition leads. could be some dud leads or a dead coilpack.

[azzfox]

Alternator. Mine does it too. Not overly loud but. Might be the source of the problems.

[jjl]

Will the coilpack just die all of a sudden. Luckily I was just stopping when the engine died.
I will check the error codes tomorrow morning.

[clubby_you]

sounds like fuel pump to me

[jjl]

I think it is the fuel pump. I tried replacing the fuel filter and then I switched on the ignition with one of the fuel hoses disconnected and nothing came out. I also tried a different fuel pump relay just to make sure that that was not the problem.
I cannot hear the fuel pump (but then I never could when it worked anyway) so will replace pump tomorrow to see if that is the problem.
Thanks

[jjl]

Well, tie me down and beat the crap out of me, it was out of fuel. Bloody gauge said almost 1/4 tank and 130 km to empty. It had always been reliable till now.
Thanks for all your advice, it is much appreciated.
I will keep the pump I bought just in case, the car has 235,000k on it and the pump is sure to crap itself soon.