I currently in my 92 ES300 have two amps, subs, and all aftermarket items in my car. I get this engine noise and have tried everything. Today I saw a post about the factory amp causing this problem so I disconnected it. That made things worse. I know it has something to do with the amp but I don't know what. Any ideas?

 

What kind of noise?

 

Well okay let me give you my set up first:

Two MTX Terminator Subs
A monoblock Hifonics Amp
A 4channel Boss Amp
Kenwood Excelon KDC-X395 Headunit

I have got a great ground
No speaker wire touches power wire

This noise changes when I accelerate but also I get a kind of popping noise when I first turn on the car as well. If you can help with either of these I would appreciate it and you would help complete my system.

 

Diagnosing a noise without hearing it is very difficult, so I was trying to figure out what kind of noise it was. Ex.: Ringing, Howling, Knocking, Hissing, Clicking, etc..

From what I have gathered is that it's a rotational noise and it changes with engine speed. I would check the alternator, because you're working with electrical components. The alternator has brushes that can make all sorts of noises over time.

 

No I told you its engine noise through the speakers not alternator noise the alternator is fine. The first noise is a humming noise that increases with rpms then theres a popping noise that happens when I turn the car off/on

 

It's engine whine.
You'll need to buy an adaptor/plug that'll connect to your head-unit - it'll stop the noise, or, at minimum, reduce it.

 

Walhnutz, you weren't clear enough in your first few posts, and considering the fact that I've never dealt with aftermarket audio, I thought you had a mechanical issue. Best of luck with the suggested adapter.

 

Please, no need to talk like that. Your post wasn't very clear, and MrBooby tried to help you anyways. Least you can do is not be an ___.

You likely need to buy a ground loop isolator.

 

Please excuse me I meant no rudeness as you can well imagine it is an annoying problem but I don't want to sound rude for your help. I was thinking about running a separate power wire for the radio to the battery with an inline fuse of course. Do you think that would help because I know the problem is because of this factory amp that has not been properly dealt with. Again sorry for sounding rude.