I notice when I'm driving that I hear a faint whining noise coming from under the hood. Especially when I gas it a little bit. I think it's the water pump but I'm not sure.

Any help as to what it is and if it isn't anything good would be appreciated.

Thanks

 

where is this whining noise comming from. does it change with rpm and a video would be extremely helpfull

 

Do your lights dim when at idle, and get brighter when you give it some gas?
If so, it could be your alternator. Mine had that "supercharger" noise when the alternator was going.

Oops, I read supercharger, not turbocharger...
Supercharger as I understand is a whiny sound where as turbochargers have a whistle-ly sound, so uh, I dunno anymore.

 

I can't post a video because the noise it too faint. All I can tell is that it is coming from the engine and I can't hear it at idle. And yes it does change with RPM

 

I've noticed that when I turn an accessory on (i.e lights, sound system and even turning signals) that the fan (A/C or heat) seems to die down and then pick back up. I don't know if this is normal or not but I figured it was. I was hoping my alternator isn't going.

 

one thing you can do is take the belt off and spin each pully by hand to feel if its turning smoothly and that might give you a clue

 

Do you have an aftermarket intake?

 

he says "yeah a turbo"

 

Lol ya my sri whistles around 25% throttle.....altho it sounds nothing like my turbo 4g63 but that has an open dump lol

 

alternator?

 

 

I got that sound now but i have a short ram intake and its coming from that.

 

Yes, your intake will cause that whistle. Lol dont worry, I like to think I have a turbo when I hear it too

 

It's normal.

 

I had a similar noise, by description, when my idler pulley was going out. It was not very loud at all, and I couldn't narrow it down. Until the bearing gave out and I lost the pulley and my belt on 294

 

The a/c compressor is easy to check. Just turn on the defroster. If the noise changes it's the a/c.
For the p/s just turn the wheel while parked.
For the idler or alt you can remove the belt.
If you still have a noise it could be the timming chains on worn guides.