Ok i was driving my 2006 cobalt ss/sc to the mall and noticed that when u got on the throttle it whistled like the belt was blowing not the supercharger and i noticed when i reved my car i heard a clicking noise. but this whistle sound only happens when i get on the throttle. What can this be plz help anything u think it maybe what could it be. it only happens at like higher then 4k rpms? this is really confusing and the car doesnt even have 4k miles on it yet! PLZ HELP

 

I get the whistle too.. It sounds like it's coming from the engine compartment.. When I first heard it I was like when the hell did they put turbos in the Cobalt?? Funny thing is mine is an LT with the sports package (SS clone so to say) which means I most likely have a different motor than you do.. What's weirder is I've been running my AC a lot because of the heat and when I give her a lot of gas I actually hear my air vents whistle along with the engine.. It sounds almost exactly like my friend's Audi when his turbo is kicking in.. I've seen a lot of other threads about this and I wonder what the hell it is.

 

my ls whistles as well

 

well this is really loud and is not suppose to happen sounds like my car is going to blow up and if chevy doesnt fix my car im deffinately not supporting it ne more its just how pissed off i am my dealer is abnoxious and really rude so we will see how it goes.

 

mine is pretty loud as well, i dont think its anything major, mine has done it since i had the car, and i asked the dealer and he said it wasnt a problem, i think it is the air intake, sounds like a really small turbo right?

 

well my supercharger u hear that but when i get in high rpms in 2nd ull hear it do that louder then my supercharger at 12.5 psi it doesnt sound healthy thats for sure and it feels like my car has lost power plz someone with a ss/sc post some replys

 

I as well have heard the whistle. BUT when I put my Fujita CAI on my car, the whistle got louder and more distinct. It is very possible that it is just your powerful SC sucking air through the filter. As for you with the LS... No idea. As for losing power... I have had times with my SS SC that I have felt as though it had less power... it's very tempremental... sometimes it wants to be powerful, sometimes it doesn't... especially after long trips on the interstate... It seems very less-powerful.

 

man i had a ss/sc i know what your talking about chill, i just sold mine.

 

I have a 2006 HHR 2.2L 5 speed and I have the same sound. I had it with the stock intake and I still have it with my ram air set up I made.

 

It sounds exactly like turbo squeal.. I wouldn't even say a small turbo

 

I get s squeal when my A/c is on, try turning off your AC and your fans alltogether

 

sorry but driving today it did it real bad and it threw a cel its so loud it sounds like when a tractor trailor lets the air out of the brakes its LOUD its not suppose to be doing it and its losing compression my ss/sc didnt even like 4th gear up a hill at 55 SO ITS AT THE DEALERS AND MY MOM (WHO BOUGHT ME THE CAR P.S. WHICH I APPRECIATE VERY MUCH AND DONT THINK I TREAT IT BAD BECAUSE IM A KID I ABSOLUTELY LOVE MY CAR AND TAKE VERY GOOD CARE OF IT) SAID IF THEY DONT FIX IT UNDER MY WARRANTY OR THEY TRY TO PUT IT AT MY FAULT THEY WILL HEAR FROM OUR LAWYER (PMS MOM LOL) SO THEY IMMEDIATELY TOOK MY CAR IN AND ARE FIXING IT!

 

Cat problem? Exhaust leak? Maybe even intake leak? I don't know, couldn't really tell from your description. It's at the dealer, that's all that matters. I'm sure they'll fix it.

 

yea that sounds really good my mom thought it was a leak in my manifold so idk she knows more about mechanics of cars then me i just love em and alley cat pm me ur gamertag on xbox we will have to play forza together!

 

sounds like the issue I was having with my cat, they replaced it under warrenty.
I hope they fixed your car.

 

ill run it by them to tell them to check the cat out

 

i have the whistle above 4kRPM too.....in my LS.....i asked my buddy about it(who knows a lot about cars) and he said it might be from the VVT.....but i dunno....no problems with it and it sounds cool so i dont give a f**k.....

 

I have aan '05 Base and I get the Same Whistle when I accelerate. Only Seems to Happen when the Engine is warm though.

 

listen guys im gonna let u on a secret gm doesn't want you to know about. when you take a look at your exhaust manifold, you notice that round cylinder object. it's a stealth turbo that the enginers at GM put on the 2.2. they don't want us to know because it's an economy car. So that wistle is normal, it's just the turbo spooling up to 20psi. jk but i had you going lol

 

Ok so I'm guessing the whistle is normal.. Stealth turbo - hmmmm - if only GM was that nice. I'd be happy with a paintjob that doesn't chip like a frozen candy bar.

 

my whistle was because MY CATALYTIC CONVERTER COMPLETLY BURNED AND I WAS LOSING COMPRESSION AND EVERYTHING CHEVY DEALER ALREADY FIXED IT UNDER WARRANTY WITH A NEW CAT!

 

guys, i have a sc, and under very little load at 2100 rpm, i hear i high pitch whistle.
it comes from the passenger side, it isnt the intake, and it isnt the blower noise i hear out of the intake. whistle isnt a right word, more like resonance from a wine glass....crusing thru a park, in first gear, i was putting at 10 mph or so, and ppl were looking. i kept it at 2100, so the noise stood out. lol

 

Yeah, my LS makes the same whistle right after 4000rpm under load. At first I thought there might be a problem, but I guess that's just how it is then.

BTW the LS (2.2) doesn't have VVT, that's just on the SS's

 

i read somewhere that when cats go bad you'll hear whistling! google it.

 

Hey 06cobaltssOrange!! I have an 06 ss/sc and i am getting a super annoying whistling noise when I get on the throttle around 4500 rpm, I havent noticed any clicking noises as you mentioned though. do you think the CAT could be my problem? also i threw a code P0420 a few months ago that went away on its own which has something to do with 02 sensors/ Cat. Any help would be appreciated as its driving me crazy! i have had the car almost 8 years and people try to tell me its just the supercharger whine which it definitely is not!