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Old 01-28-2004, 06:42 PM   #1
speedblind
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Default The sound of birds chirping?

Never noticed this before yesterday, but I pull into the garage and my girlfriend says it sounds like birds chirping in my engine bay. I'm guessing it's the belts. Anybody have experience with this? Does it mean the belts need to be changed or is there a different fix?

Thanks for the help.
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Old 01-28-2004, 07:48 PM   #2
tekfoc
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thats normal the noise is part of your turbo system. check out a rally race and listen to the wrx when he lets off on the gas pedal you will hear the same noise but alot louder. sounds real cool.
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Old 01-30-2004, 11:46 AM   #3
speedblind
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Actually, I just noticed the noise recently. I'm not sure it's a normal part of the car, as some other WRXs I've heard aren't as loud. Any other suggestions?
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Old 01-30-2004, 01:26 PM   #4
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Stock twin tip exhaust? Then its just the muffler whistling, you cant hear it while inside with the windows rolled up, and if you blip the throttle from the engine, it sounds like its commin from the engine bay.
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Old 01-30-2004, 02:29 PM   #5
speedblind
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Car's got a turboback and upipe, both have been on for over 10K miles with no other recent mods. Thanks for the reply though.
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Old 02-01-2004, 11:02 PM   #6
garface
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Check that all your pullies and belts are tight. I have heard a similar noise from my friend's VR6 and it was accompanied by the pully wobbling around loosely. It only happened for a short time and then stopped and started randomly.
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Old 02-02-2004, 01:38 AM   #7
Uncle Scotty
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Quote:
Originally posted by tekfoc
thats normal the noise is part of your turbo system. check out a rally race and listen to the wrx when he lets off on the gas pedal you will hear the same noise but alot louder. sounds real cool.

I don't think so......the turbo system on a rally car is vastly different than what we have on our WRX's....
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Old 02-02-2004, 02:55 AM   #8
Ken
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I think he may have meant a anti-lag system which we don't have.
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Old 02-02-2004, 03:29 AM   #9
speedblind
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Yeah, it's definately not anti-lag. That would be pretty cool though

I'll check the belts tomorrow. Thanks for the advice!
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Old 02-02-2004, 03:30 PM   #10
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Actually i noticed it when i put in my downpipe/uppipe, and in my case im almost positive thats its comming from a very small leak in the muffler to rear resonator pipe section. If the leak is small i would assume for the gas to escape it would have to come out at a high force causing that high frequency chirp possible as it passes the gasket.
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Old 02-02-2004, 05:15 PM   #11
Ken
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It is possible it's from the exhaust system. My friend had it on his 2002 WRX wagon and I've read other posts describing this sound.
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Old 02-02-2004, 10:03 PM   #12
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My car makes kind of a 'chirp' on throttle tip in sometimes and it is NOT the exhaust...I believe it is the throttle plate inside the throttle body causing a 'whistle' when conditions are right.
It seems to be a weather/temperature related noise.
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Old 02-04-2004, 01:45 PM   #13
Subie Gal
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does this 'chriping' go away
when you put the clutch in?


if so it's your throw out bearing on your clutch.
bearing can become dry and wiggle itself to death...

if this is the case, it's something you need to change,
not necessarly URGENT, but get it fixed soon.

good luck
Jamie
www.subiegal.com
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Old 02-05-2004, 01:59 AM   #14
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Default No Worries.

My 02 started making this noise after up-pipe and down-pipe install. I have heard it on other exhaust modded Subys as well. Especially to cars that have retained the stock cat-back section. The sound that I have heard would be decribed as follows: blip the throttle to 3 or 4k, and as the rpms return to idle one or two bird-like chirps could be heard. For all I know it could be chirping like crazy while revving above idle, but the exhaust note could be drowning it out (just a thought). Also, I do not think that this is a leak. Leak noises are hard to miss, IMHO.

Shark
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Old 03-02-2004, 05:13 PM   #15
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I just put the Helix DP on with a STI cat back on my 03 WRX..and I am almost sure it is not a leak, but I hear a "kinda old VW bug churp" for lack of a better description...but I also heard it on other modded WRX's? Is this the sound?


XXX
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Old 03-02-2004, 05:31 PM   #16
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It is the muffler section of the stock exhaust. There are little holes in the tips that drain water and as the exhaust goes over it at a certain velocity it acts like a whistle. Do a search for "exhaust AND chirp" you will see there are a ton of threads. I know this is an old thread but in case someone searches I want it to have an answer.
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Old 03-02-2004, 05:40 PM   #17
speedblind
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It's not the stock exhaust, as I don't have it on the car anymore. I'm thinking it's the belts.
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Old 03-16-2004, 05:56 PM   #18
Kevin
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Hmm, hate to bump an old thread but...
My car makes the same sound, I'm thinking it's just the rubber exhaust hangars squeeking as the exhausts moves a bit.
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Old 03-25-2004, 11:26 AM   #19
speedblind
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It's definately not the exhaust on my car, as I have the KB hangers all around. The noise actually goes away with a little WD-40, but then comes back within a day or so. I'm thinking the belts may have to be changed.
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Old 03-29-2004, 02:49 AM   #20
ShapeShifterz
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After I gutted my OEM uppipe, my 04 wagon started to develop this sound. I only noticed it when manuevering in an enclosed parking spot. I've narrowed it down to being the exhaust hangers somewhere, because after I shut the car off and slammed the door, I was able to reproduce the sound.

I didn't refasten the stock downpipe transmission mount, so I'm guessing thats where more flex in the exhaust system is introduced.
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