frankc90

i just installed the 2.4 mani last night.. as i accelerate thru about 2k to 2500 i hear a very subtle squeaking sound, almost like a whistle. is this normal and should i be concerned about this??

originaladrian

is it like a hiss?

ecotecs make some crazy Evap valve noise.


I can here it clearly from inside the car with the windows up. ( i have a CAI tho)

XM15

I'm assuming you mean a whistling noise at partial throttle?

originaladrian

seeee you know what im talking about lol

jhop16

lol my 2.4L makes a whisle/squeeking noise at about 2500 .. sucks

XM15

Unless you throw a code, I wouldn't worry about a thing.

In fact, if you throw a code I wouldn't worry. It would be an easy fix.

Just check to see that everything is tightened to spec and you are good. I'm sure that its just some noise that you'll have to live with.

originaladrian

I had someone ask me if that was blower whine once... lmao

jhop16

a kid i work with thought mine was TCed, cuz i'll like just tap the gas while i'm rolling in the parking lot and the intake will bellow and it will make that whistle noise...

Sentry

Mine used to do that, it eventually went away though.

Check for an intake/vacuum leak.

Gene Culley

iTrader: (1)

I have the 2.4 intake on my 2009 2.2 (standard now) and I don't hear any noises like that.

scagnetti76

my 2.2 has done this from day one. i wouldnt worry about it.

06_ion2

my car whistles loud

NWAE Cobalt

iTrader: (1)

do you have an adapter plate runnign a 2.2 tb??

frankc90

nope no adapter plate. i have it still but i didnt even bother to use it

hugemurph4

haha it is there for a reason u know...you might wanna put it on...also that whistle is from ur intake sucking in air...nothin crazy but i like it haha...my buddies aem intake on his stratus does the same thing...but def put that plate in haha

frankc90

i read that 07 and up cars dont require the adapter plate.. someone correct me if im wrong lol

WHITE G5

iTrader: (1)

you are correct

tru2nrtt777

iTrader: (1)

Mine makes a suction sound. I gave a kid a ride and he asked me if my BOV was stuck open... I smiled and said yes.... Then giggled my ass off after he got out of the car.

blackbolt89

mine has done that since the day i put my 2.4 manifold on with an injen cold air. i thought something was wrong. then i grew to like the sound. sounds kinda like a baby turbo spooiling or something. its awesome under overpasses.

409Cobalt07

the whistling you are hearing is coming from the little silver plate that goes in the center of the manifold. its nothing to worry about but when the whistling stops its plugged up with oil and needs to be cleaned. gm has aservice buliten out that has techs covering the hole and redrilling it off center to get rid of the whistle. its really no big deal but some people dont like their cars making those noises. ive fixed a few before. its really nothing to worry bout as long as you dont mind the sound.