I had My Cobalt in at the dealer th other day for service b/c the car was making a loude whisle under heavy acceleration. I thouth maby my compresor clutch was stick or somthing. The dealer told me nothig was wrong and this was normal for the 2.2. Has anyone else had this problem??

 

Yes my car used to whistle under hard acceleration at around 5k rpms or so. Now it just makes this loud spooling sound. I may need to take it in....

 

lol... i love it +1 rep ahah

 

I hope everyone has this sound. I actually love it. It became more prenounced after my intake upgrades too.

 

So I guss this is normal afterall.

 

catalytic converter is my best guess. that whistle noise happens when it gets clogged. my guess is somewhere down the road you'll get an CEL. does this happen like as soon as you hit the throttle and go into high RPMS, and just AT high rpms?

 

my car makes a sound like that after i got my cai installed. and once i put on the 2.4L intake manifold it does it even more now...

 

It's not CAT unless mine was clogged from the factory. Mine was much more noticed after K&N filter was installed. Not really sure what it is. It's not a bad thing.

 

ya after i put the injen CAI on i get this whistle at like 2500RPM but only there, idk its kinda cool i guess lol

 

i don't think I've ever herd a naturally aspirated engine "whistle" before. i just know thats a common problem with the 2.0's, cats clogging.

 

lol. The whistle sound from the intake is normal on our cars. But what i was joking about is that the turbo spool is so loud i cant hear the whistle anymore. Thanks for the input tho

 

I had a whistle sound i thought it was the brakes at first but after really listning it was air on the door mirrors. Theres a gap in them and when its windy and i get going a certain speed it makes a whistl noise. dont know if this is what you hear though.lol

 

thats no problem man,, its just a super secret supercharger the 2.2 has..

 

When i race my friends they all ask me if my car is turbo charged. Mine whistles around 3.5k and up. I think it sounds sweet, as do all my friends.

 

mine does it to.

 

Mine whistles under normal acceleration at all speeds around 1500 - 3200 RPM, very annoying.

 

hey guys that whistle you hear in the muffler with a moister hole in the bottom thats what make the whistleing noise i had it and it sounded bad ass then i got cat backs and it went away its just the stock muffler making noise

 

I didnt have a muffler on and it still did it. I had an CAI which also increased the sound. I had even raced my buddy before i was turbo'ed and he said from outside it sounded almost like a turbo it was so loud. I think its just a sweet noise our engines make N/A while under acceleration.

 

It's deffinalily not the muffler the sound is distinctly coming from the passenger side of the engine

 

see i put borla exhaust on my car after i had straight pipes and once i took the muffler off i heard no whistle noises after that i dont know whats up woth that maybe somethins fucked up on my car because i dont hear that noise any more its wierd

its the stock muffler that made the noise i think and just a question whats a cai ive heard it but notpossitive what it is

ok got it i think i know what the noise is our ecotecs the L61's and lts have that EGC vaulve and i think thats what it is i hear it on mine now and i have intake on my car also and it is very noisy and cool sounden but our motors are like the i-vtech motors in the hondas but american made so its the tec part spoolin out i think haha

 

Mine whistles too, I modified the stock airbox, put on a 60 degree joint and then put on my spectre down in the wheel well, whistles too, sounds more like a ricer now though, miss my short-ram sound but I still get to wave at all the people I dust

 

yeah like i said i think its the EGC valve and our engines are set up to run like the v tech motors in hondas and all that i am pretty sure thats what that noise is from

by the way my old profile name was cobalt07ls haha

 

oddly enough i get this weird sound similar to a bov. only happens during gear shifts and it's pretty bad as. it's even cooler with the bottle cause you'd swear i had a turbo if you didn't know.

 

yes, it is because the 2.2 is DOHC and is considered an interference motor, and DOHC's make that "whistle" sound...just like the v-tec

 

You're hearing air...