Rep Power: 291

I have a 2003 auto Civic LX. Everytime I press and depress the gas i hear a screeching noise. This has bothered me for some time now and I have brought it to Honda several times. Of course each time they could not duplicate the sound and found no problems with the car. I just hit 36000 miles so my warranty is up and I still hear the screeching sound. I have no idea what it is. So I was just wondering if you guys ran into something like this and what the noise could be. It kind of sounds like the intake but with a noise similar to the sound of bad brakes. The sound comes and goes. So some feedback would be appreciated. Thanks

~Mike