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08-14-2005, 07:09 PM | #1 |
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High Pitched Whistle at 3K RPM
Let me first introduce myself since this is my first post. Been reading the forums for a few years but I recently purchased (April 05) an 05 WRX. I'm a complete newbie when it comes to cars, but I'm here to learn. Now onto my question...
When I'm driving on the freeway in 5th gear, I hear a "Whistle" or a "Whine" at about 3K RPM. It can be heard at 2.5K though. Sounds like its coming from underneath the hood. Its proportional to how much gas I give it. i.e. More pedal = higher pitched sound and foot off the pedal = sound gone. So I'm guessing that rules out the engine. Should I be able to hear my turbo when I'm only cruising? Anyways, any help is appreciated. Oh, lastly... no mods to my car. Has 6K miles. 1st oil change at dealership done at 2.5K. 2nd oil change done at 5K by myself. Broken in by the book. I don't abuse my car but I don't mind pushing it every once in a while. Thanks in advance.
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08-14-2005, 07:10 PM | #2 |
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Sounds like normal turbo-spooling sound to me, nothing to worry about. Enjoy your WRX!
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08-14-2005, 07:13 PM | #3 |
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How loud is it exactly? If it's kinda quiet, then it's probably the turbo, if it's a squeeling that's hurting your ears, then it's probably something else.
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08-14-2005, 07:15 PM | #4 |
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well... since this is his first subi (probably his first turbo car), im quite sure its just the turbo spooling up...
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08-14-2005, 07:35 PM | #5 | |
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08-14-2005, 09:03 PM | #6 |
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congrats on the car, have fun.
sounds like normal turbo spool. broken in, eh, now let's just take a look at stg2 |
08-14-2005, 09:57 PM | #7 |
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Haha, yeah it is my first turbo car. But is it normal to hear the sound when I'm not accelerating? I'm just holding it at 3K during freeway driving. I thought the turbo only spooled when I accelerate the car...? But, it is not that loud. I can only hear it when the music is off and when the road isn't too bumpy.
Thanks for all the fast replies! (Just a paranoid new owner!) |
08-14-2005, 10:27 PM | #8 |
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do you have a boost gauge? you may be "holding" but actually applying some pressure to the accelerator, therefore boosting
just wait until you hit stage 2...oh man...sounds like a midget is in the engine bay whistling for his dog ----TOM |
08-14-2005, 10:29 PM | #9 |
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the turbos on subarus are easier to hear inside than on other cars since it practically sits on the firewall.
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08-14-2005, 10:35 PM | #10 |
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No boost gauge yet... that will be my first "mod" (once I'm not afraid to work on it )..
As for applying constant pressure.. I think its constant lol. I can hear it when the cruise control is on too (On very flat roads too). Sound is completely gone when I let off the pedal. Actually, I can kinda hear it in 4th gear also, but I rarely stay at 3k rpm in 4th gear (Usually shift to 5th). Can't wait to upgrade.. but first comes improving my driving skill. I'm in the Bay Area now so Vishnu is right around the corner. |
08-14-2005, 10:37 PM | #11 |
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maybe ur bypass valve is a lil loose, ( BOV) check to see that its tight. if its loose, air might be pushing the gasket between the BOV and the intercooler and cause a whine, sorta like how a supercharger sounds.
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08-15-2005, 03:41 PM | #12 |
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Dude, did you change or inspect the air filter recently? maybe the filter box isn't clipped in correctly.
Carl |
08-15-2005, 03:56 PM | #13 |
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Tinting
Hi everyone.This is my first post, I don't know if I'm in the wrong place to asking about TINTING the windows?
I live in RI and I was wondering if there is anyone out there that got their car tinted in RI?WHere is a good place? If you went more then the legal limit, have the cops bothered you?? Thank you |
08-15-2005, 04:07 PM | #14 |
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did you delete the resonator?
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08-15-2005, 04:17 PM | #15 |
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It could be the rear differential. I've seen it personally. I'd bring it in to have it checked while your warranty is still good.
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08-15-2005, 04:20 PM | #16 | |
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08-15-2005, 04:47 PM | #17 |
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Resonator is still there. (No mods done to the car yet).
I'll check the air filter but the sound is related to how much gas I give it. Worth a shot though. I think I will take it in to the dealership. Just gotta find time since its my only car and I need to goto work. Thanks for all the suggestions! |
08-16-2005, 01:32 PM | #18 | |
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Quote:
Good luck! As for this thread...I think I know what you are talking about. I get a random noise that sounds like the turbo is spooling even though there is no boost (i installed a boost gauge so i know). It lasts for a couple seconds and then is gone. Sound right? Anyway...I haven't noticed any performance issues because of it. I just live with it and move on. I think it is just one of those noises you have to get used to along the way. My car also has a problem with waste-gate flutter. Oh well...until someone shows me that my car will die I'm just going to keep driving and ignore it. |
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08-16-2005, 02:19 PM | #19 | ||
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08-16-2005, 02:30 PM | #20 |
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thats your turbo if you have no beats on and windows up you could hear it, but windows down doing like 50, i could no longer hear my turbo spool
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08-16-2005, 05:59 PM | #21 |
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If its only when you give it gas then you are hearing the turbo spool.
Go find an open road, turn off the radio, put the windows up, and the A/C to low fan. Start the car at a slow roll....1500-2000 RPM's. Get going...floor it, watch the RPM's climb. You'll hear the turbo start to spool (whistling noise...kinda like a tea kettle) getting progressively louder to max boost. Stock WRX boost is limited in 1st and 2nd, so turbo will be louder in 3-5 at max boost. Is that what you are hearing? |
08-16-2005, 07:06 PM | #22 |
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Yes, I believe it is my turbo then. Makes kinda the same sound as when I'm accelerating quickly. Which brings me to my next question:
Should I be able to hear the turbo spool when I'm not accelerating? Yes, I'm giving it gas, but only enough to keep the car at a constant speed. I was under the impression that turbos don't kick in if you're just going at a constant speed. Maybe its time to goto howstuffworks heh |
08-16-2005, 07:12 PM | #23 |
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gear whine + turbo
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08-16-2005, 07:20 PM | #24 |
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Turbo's kick in from engine load and rpms. higher rpms is going to mean more exhaust gas = turbo spool. It doesn't have to be making boost to make noise however. the air could just be passing through the inlet and the exhaust is helping push the other side.
Also you could be creating enough engine load at cruising to need alittle boost (though i doubt that) |
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