High Pitched noise coming from the gas tank area
I know it may sound funny but have you ever plugged something in to a wall and then started to hear a really high pitched noise coming from it? Well this happened to me today when I was driving, At first in the cab My brother and I heard this sound like a tire bleeding air, but it happened when I let off the gas and when I was stopped at a stop light or stop sign. So I'm going to lowes anyway so I stop at the back of the parking lot and raise to the hood to make sure all my hoses are connected and seated right (In which they are). So I go to the back of the truck for a minute and start to hear a high pitched noise, it's not bugging me yet because nothing seems to be wrong, but I am wondering what it could be? My brother thinks its the fuel pump, which it very well could be. Does that mean it's going out?
Thanks in advance,
2004 Ranger 4 dr. Supercab EDGE 3.0
-K&N FIPK II Cold Air Intake
-Magnaflow 2.5" In/Out Muffler
-Alcoa's wrapped in General Grabber AT2's