Engine Noise

[93InfG20]

Anyone had a problem with engine noise coming through your speakers when using an amp and subs? Anyone know how to fix it?

[frogg]

The reason you're getting engine noise could be because of your grounding. Try regrounding your head unit and amps or grounding them to a different spot. Make sure where you are grounding them is connected directly to the chassis. Also, for better results, scrape the paint off (if any) around where you are grounding.
There are also, I believe, things called "ground loop isolators" that will get rid of engine noise. That's about all I know though.

[93InfG20]

Any other suggestions? I've tried all mentioned above

[frogg]

And you've ran your speaker wires away from any power wires?

[93InfG20]

yes I have

[frogg]

Hmm.. do you have any of your wires ran near anything like, for example, spark plug wires in your engine compartment?

[93InfG20]

no my wires are run as far away from everything as they can get

[frogg]

I'm trying to think of something else. Only thing I know that will most likely work would be putting ground loop isolators in. Gimme some time.. I'll come up w/ something.

[A380Driver]

Alternator going?

[93InfG20]

Alternator going? Im getting alternator whine comeing from the engine

[frogg]

I think he means, is your alternator crapping out on you

Also, tell me exactly where your head unit and your amp(s) are mounted

[93InfG20]

The head unit is mounted in the normal DIN opening. The amp is mounted on top of my speaker box.

[frogg]

whoops meant grounded, not mounted

[93InfG20]

head unit is grounded with the factory ground wire
amp is grounded to bare sanded metal in the trunce

[frogg]

Ok, I'm 99% sure it's your head unit grounding. Ground it to something other than the factory ground. Grounding it to the factory ground is what causes 90% of engine noise in sound systems.