Hissing Sound, Video Inside, Please HELP!

Blinkstang · Mar 19, 2006

Need some help, my car has been making this hissing sound since the day I bought it, one year ago. Its very loud and annoying, it goes away when you apply throttle but comes right back afterwards. Sometimes the sound will go away for a little while if I leave it sitting. The engine is all stock, except a K&N, all my money went to full exhaust and partial suspension last summer.

Here is a video I just took of the sound:

http://videos.streetfire.net/video/2623CC95-3189-4A71-B385-4A162BB7AA06.htm

I am an engine newb, so please help me out. Thanks guys!

hotmustang331 · Mar 19, 2006

Didnt watch the vid...but I think its the IAC valve. take it off and clean it, should go away. Mine still does it sometimes....sounds like a have a SQ vortec under the hood lol.

DTNODYA · Mar 19, 2006

That is weird. IAC is the only thing that seems to make some sense because it is at idle when it happens. I have no idea though. I was surprised that you could hear the noise in the video, thought it was going to be ROAR ROAR ROAR I am sure someone will help you out that knows more than I.

01Steeda · Mar 19, 2006

Sure thats not a cobra??? sounds like a snake hiss to me

anyway.. I agree IAC.

HoustonGT · Mar 19, 2006

Hmm, interesting. Mine does the air hissing noise as soon as i turn the car off for about 2-3 seconds and tapers off, its pretty noticeable. Is that the same thing?

tonys5.0 · Mar 20, 2006

My 2004 gt makes the same sound. This actually makes me feel better that I'm not the only one.

loadams42 · Mar 20, 2006

PCV valve may be stuck. If so, the hose running from the valve to the manifold has weakened over time, might have a crack in it by now, thus the hissing noise. Check at idle to see if the hose is collapsed for the PCV sticking. Remove hose and check for cracks.

Barrier · Mar 20, 2006

HoustonGT said:
Hmm, interesting. Mine does the air hissing noise as soon as i turn the car off for about 2-3 seconds and tapers off, its pretty noticeable. Is that the same thing?

That would be your K&N hard at work

davergt · Mar 20, 2006

sorry but, whats an IAC valve?
where is it located? my ride does the same thing

joshheat25 · Mar 20, 2006

It is telling me your Video is Corrupted! but I know at idle mine made this sound before! I took out the IAC and cleaned it! it also could just be your K and N

Blinkstang · Mar 20, 2006

joshheat25 said:
It is telling me your Video is Corrupted! but I know at idle mine made this sound before! I took out the IAC and cleaned it! it also could just be your K and N

Fixed the link up top. The noise was there before the K&N as well, I just put that in a few months ago (cleaned and oiled).

davergt said:
sorry but, whats an IAC valve?
where is it located?

I posted this same question on another forum, and some said it was possible it could be one of the idler or tensioner pulleys. The sound does seem to be coming from that area. I will definitely look into checking out my IAC and the pulleys, see if I can get rid of this annoying hiss, I only wish it was the sound of a Cobra!

Glad to see Im not the only one with this noise, hopefully one of us can get rid of it. Then report back what you did, haha!

deftsound · Mar 20, 2006

i think if the iac was stuck then your car wouldnt be idling correctly and it would be stallilng. Sounds more like either a vacuum leak to me

Hissing Sound, Video Inside, Please HELP!

Blinkstang

Member

hotmustang331

Active Member

DTNODYA

Member

01Steeda

New Member

HoustonGT

Gilded Gelding

tonys5.0

New Member

loadams42

New Member

Barrier

New Member

davergt

New Member

joshheat25

Member

Blinkstang

Member

deftsound

Please ask me how much my supercharger cost

Similar threads

Hissing Sound, Video Inside, Please HELP!

Member

Active Member

Member

New Member

Gilded Gelding

New Member

New Member

New Member

New Member

Member

Member

Please ask me how much my supercharger cost

Similar threads

Privacy & Transparency

Privacy & Transparency