Fuel Pump

Hello everyone...
I need a little help on this
I have been hearing noise coming from the rear area of the car. I have a clue of what it could be, but I am trying to be for sure that it is the fuel pump. It is making a whining noise when I let the car idle, and it gets louder and lower. Also, it sound like the same sound when you turn the ignition to the on position and the fuel pump whine , but it seem like the fuel pump whine continuosly through out the whole time the car is running. What could the actually be?

The fuel pump runs continuosly when the car is running - normal.

If it is louder than usual it may be on its way out.

Big-L posted this, will show you how to install pump.
http://www.automotiveforums.com/vbulletin/showthread.php?t=330940&highlight=fuel+pump

http://img.photobucket.com/albums/v425/kustomkid54/Christmas2004001.jpg

Would the fuel pump mess up the way the car idle, let me know because when I hear the noise from the rear, it sond like it affects the way the car idle

I really need help, so can somebody help me out on this problem, the thread is above