high pitched humm/hiss interference

[sxystev0]

most people know the sound an amp makes when getting interference from somewhere...the high pitched hiss. Well when outside my car i hear that noise....not related to an amp at all. It sounds like it's coming from the back near the hatch. Anyone have this problem or know what the problem is. I think it maybe the intank pump? complete guess....dunno what else would make noise like that.

happens all the time....

 

[The Shape]

Sounds like your fuel pump. Most of the pumps on 5.0's are a little loud.

 

[Mavrick]

Ya that'd be your fuel pump, don't worry, it's normal to be loud like that.

My buddy's CD deck in his honda makes an interferance hiss to it... people actually believe its a turbo (gets louder with RPM's) LOL.

 

[Mavrick]

In fact, if you have to be outside your car to hear it, then yours is quieter than most!

 

[sxystev0]

okay cool thanks i thought it might mean it was dying or something. thanks a lot

 

[Mavrick]

It's actually opposite.. when it's dying, it gets really loud, obnoxiously loud.

 

[mach_71]

hmm ...would it get louder as you accelerate? i have a sssssss sound only when i gas it its very annoying ...maybe thats what it is , i thought it might be the smog pump

 

[sxystev0]

are all fuel pumps loud or can i replace it with a quieter one

 

[Mavrick]

sxystev0: If you can't hear your pump from inside your car, then you've got the quietest pump your gonna find. All mustang fuel pumps are loud.