Whistle..?

[PK2000GT]

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.

 

[PK2000GT]

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

 

[nik12937]

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.

 

[PK2000GT]

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.

 

[industrialfish]

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.

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

 

[FordMan77]

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

 

[gtpguy98]

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.

 

[The Guz]

My brothers 03 gen 3 just started doing this.