Hey, I just noticed when I took out my back seats that from somewhere around my fuel pump, there is this weird sound. At first i thought it was a screw or something, just vibrating against something, but it sounds like its coming from the fuel pump. I replaced it about a year ago. When I take off my gas cap, it is pretty vaccumed...I never heard anyone elses that does it like mine. Only thing I could guess is that maybe the lines have stuff in them and its having a hard time or something. Any ideas?

 

If you have a vacuum in your fuel tank, you might want to check to see if your charcoal cannister is clogged up, the tank should vent through there, there is also an evap. purge solenoid that pulls the vapors out of the cannister. I wouldn't worry about the noise too much as long as your fuel pressure stays normal.