Sound Problem

Ok, here's another prob with my car. I hear the engine rev in the speakers. It sounds like some kind of whistle that's copying the sound of the engine as it revs up, as I shift gears, stuff like that. My uncle, when he had the car, thought it was the ground wire and changed it and everything, but the sound persists. He once had a nice sized AMP in the back, actually it took the whole trunk up, and that's now gone, and the car still has an Equalizer in it. That's getting removed one day, but I can't do stuff like that right now, don't know what the heck I'm doing, and don't have money to replace anything. I'd just like an idea of what the problem is. Thanks a lot, Peace Celica lovers.

I don't remember what it's called but it removes all of the feedback noise from the sound system you can get them relatively cheap I think

Noise Filter. There are two types. One for the antenna, and one for the power to stereo.
Sounds like you need one that attaches between the power source and the Stereo. Don't get the cheapest one you can find, either. They aren't that much anyway.

Go to a stereo shop, or even Radio Shack- although the guys at radio shack know less and less about radios (or anything else) than the name would lead you to believe, so don't bother asking them anything.

I just took a look at the wires coming from the Stereo and Equalizer in the car. Called up my Uncle and asked him about the ground wire. I know it's a problem with the Equalizer cause I can make the noise quiet or loud with that, and not the volume on the radio ya know.

I was also looking here (http://www.ehow.com/how_5829_wire-car-stereo.html) at their tips.


3. Ground the amplifier to a clean metal surface on the car's chassis. The ground should be no more than 18 inches from the amplifier. The ground cable must be the same gauge size as the power cable being used.


Tips:
You don't want to route signal wire next to power wire because that could result in noise entering the sound system. If power cable and signal cable must cross, cross them perpendicularly.

No idea if my uncle followed this, but I have tried moving the Source Ground wire a few times and no luck ridding myself of that noise. I was wondering if I could rid myself of the equalizer all together, but I can't do that right now, cause I still have school on the weekdays (senior), so maybe I can work with that when I get home tomorrow.

I can get pics if necessary, anyone have any ideas?