Whistle..?

Ok, guys...my N/A gt started whistling this morning between 1/3 to full throttle. Its sounds cool, but worries me at the same time. I was trying to follow all of your posts in this thread, but got lost. My car, however, doesnt whistle at idle or cruise speeds that I can hear. Would this be a exhaust gasket leak?

Note: it was about 20 degrees (F) out this morning.

Anyone have an idea of why mine is making this whistle too?

Try to determine where it's coming from in the engine bay, once we know a general location we can rule stuff out, too many possibilities otherwise.

I tried revving the motor and listening to the sound with the hood open today. It sounds like it coming from the passenger side. I hear it more when I'm inside the car pushing the throttle with my foot.

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Originally Posted by SpeedGrid

I am having this problem as well. Happens usually when the car is hot. I popped the hood and it sounds like its coming from the supercharger. The supercharger is relatively new as it was replaced a couple months after owning the car under warranty so the pcv valve is new as well. Did you figure out what is causing the problem? I have a 2004 grand prix gtp.

The problem comes and goes once or twice a month and its really annoying. I checked for vacuum leaks and I dont seem to have any.

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If I recall correctly, it's a leak between the supercharger and whatever it's called that it's bolted to. Upper manifold?

The SC is the upper manifold. That would be the LIM it's bolted to.

My gen3 makes a similar noise as the op's just not as loud. I know it's not a vac leak or an exhaust leak and it sounds like it's coming from the snout. I think it's bearings in the blower/snout whatever. But until its gets worse I'm like screw it.

My brothers 03 gen 3 just started doing this.