High Pitch Humming noise????

[SliverStang]

When my car is idling it has a Humming noise coming from the engine. Anyone have any idea as to what this may be. I can only hear it at idle.

 

[SlowRider]

Do you hear from while you are in the car??? radio on/off??

I know that I actually have a high pitch humming noise that I only hear at idle. I though it was engine but turned out to be exhaust. Had mufflers rewelded and sound got a little quieter so I am not sure where the rest of the noise if from guess I just keep on the gas

 

[trublustallion]

the fan

 

[SliverStang]

Nah its not the fan.. I don't know I just got the nitrous hooked up and im really paranoid or somting??

 

[Phoenix00GT]

Did you re-do your fuel system when you did the nitrous? Could it be a fuel pump?

 

[SliverStang]

nope its runnin the stock fuel system.. guys are NOS said it was ok to run my setup with the stock system but upgrading it wouldn't hurt it.. so im gonna get a new pump pretty soon.. I don't know it mite be the exhaust leaking I hope not but it sounds like its coming from the engine area.