I installed some things today, it involved 4 units and 2 amps. Now when i hit the gas i get a whirling sound that gets louder as the pedal goes down more. What did i do wrong?

 

the power wire is too close to the rca's or speaker wire. spereate then or get a ground loop isolator <--- someone please correct me if i am wrong to fix the noise.

 

It used to be that running the RCA and power wries too close together would be a problem, it is not so much anymore. Proper grounding is the most important. IF everything has a good ground connection, then you should not have hardly any noise, if any.

 

I would go back and recheck your grounding point(s). If there's any paint, scrape it off to insure a good ground contract between the wire and chassis.

 

after playing with it, i noticed its coming from the ground on the wiring harness, if i wiggle it, it either gets incredibly loud or just disappears

 

reground the HU to a better chassis location and see if that helps

 

I'm having a similar problem. I get super nasty engine noise from my new hu. I know it's for sure from the hu cuz the noise changes as I wiggle around the hu. I took it to an install shop and they popped in an hu they had lying around and said no noise. He says that maybe because the factory ground leads in our car share the same ground with other components that maybe that's messing it up. IS THIS COMMON IN 5TH GENS!?! Do I REALLY have to make a new ground point, aren't these things designed to run off the factory one....

 

Well i sat there and rewired the whole thing yesterday and good news, most of the noise is gone to the point that if music is on i dont really hear the whirling and its very light when the music is off. However now all my speakers sound distorted since i rewired, damn i cant get this shyt working right. I fix one problem and on comes the next. Im gonna go now and just rewire the speaker wires and RCA, hopefully ill fix that without returning the whirl.