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Old 05-06-2005, 03:40 AM   #1
cerelius
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Exclamation Another question -- Whining noises from engine at low rpm = good/bad?

Hi, after getting more comfortable with the clutch in my newly acquired '05 WRX, I am now noticing that my engine whines. This is when the gear is fully engaged on 1st, 2nd, or 3rd gear, and I step on the gas slightly. I have driven a turbo before, but I am not so sure this whining noise is normal: it's like a scream, really (a la Airwolf, except much higher pitched). Now, does anyone know if I should be concerned about this high-pitched scream?

I get the same noise whether I put in 87, 89, or 91 octane fuel. (87o is bad, bad, bad... my car gets wretched sick on that stuff so I will not put that in again)
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Old 05-06-2005, 07:48 AM   #2
conker69
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*bows head in shame at the mention of using the wrong fuel YET again*

Screaming? Make sure your parking brake is not on.
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Old 05-06-2005, 08:11 AM   #3
peddlerex
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i tend to get the same thing (i believe) from what i get out of it, it seems to be the tranny winding down, possibly tranny strain, but im not tooo sure. i anyone could be some help to cerelius and im sure wed both be grateful. thanks!
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Old 05-06-2005, 08:46 AM   #4
coldfire22x
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you sure it's not just the turbo spooling up?
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Old 05-06-2005, 09:29 AM   #5
drrice
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yea dont put 87 or 89 back in and youneed a new fuel filter sir.... 87 and 89 is bad for it
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Old 05-06-2005, 09:43 AM   #6
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Quote:
Originally Posted by drrice
yea dont put 87 or 89 back in and youneed a new fuel filter sir.... 87 and 89 is bad for it
There is absolutely no reason to replace the filter
Its not like 87 is dirtier than 91. Just drive it easy till the 87 is gone and fill up with 91 minimum and resume beating it.

Sounds like an up pipe leak to me, which would be odd on an 05...
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Old 05-06-2005, 02:20 PM   #7
etrnlderek
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Quote:
Originally Posted by cerelius
Hi, after getting more comfortable with the clutch in my newly acquired '05 WRX, I am now noticing that my engine whines. This is when the gear is fully engaged on 1st, 2nd, or 3rd gear, and I step on the gas slightly. I have driven a turbo before, but I am not so sure this whining noise is normal: it's like a scream, really (a la Airwolf, except much higher pitched). Now, does anyone know if I should be concerned about this high-pitched scream?

I get the same noise whether I put in 87, 89, or 91 octane fuel. (87o is bad, bad, bad... my car gets wretched sick on that stuff so I will not put that in again)

I just recently purchased a 05 WRX and have the same sound. I think its just coming from the transmission. Never driven a Subaru so I have no idea if this is bad or not. Seems fine so far.
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Old 05-06-2005, 03:56 PM   #8
KingOfSiam
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I get some noise too from 2000-2500 rpm's. It's not really a whine but almost like a *whoosh* sound of air escaping.

Bone stock, btw.
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Old 05-06-2005, 04:10 PM   #9
WRXTuan
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It just means step on the gas a little longer until you don't hear it anymore. BTW, i believe it's the turbo spooling at low RPMs.

T.Vo
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Old 05-07-2005, 04:59 AM   #10
cerelius
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Hi guys, "Turbo spooling up"? At 1500-2500 rpm... sounds kind of strange, I thought the turbo only kicks in after 3000. Mainly concerned about the intensity and high-pitched tone of the whine / whoosh; I've driven a turbo before ('89 LeBaron GTS), and the whining noise is much lower pitched and much less noticeable. If this is a factor of the engine's energy output, I suppose a screaming whoosh could be expected.

If it's not, then I'd be interested in a way to adjust the intensity and pitch of the whine without having to step on the accelerator. Call me picky, but I like my car to sound right.
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Old 05-07-2005, 05:21 AM   #11
TurboReXx007
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i dont think that sound is bad...maybe your brakes are rubbing?
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Old 05-07-2005, 06:10 PM   #12
SpaldingSpeed
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I know in the STi I get lots of different noises if I'm in a low gear and let the engine brake the car down (differential sound) I assume that what you're hearing is simply tranny noise......wouldnt worry about it, these things make noise...welcome to Subies
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Old 05-07-2005, 06:14 PM   #13
KingOfSiam
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Ya if these things weren't so darn reliable I'd be concerned.

Last edited by KingOfSiam; 05-08-2005 at 12:14 AM.
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Old 05-07-2005, 10:33 PM   #14
scooby888
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Mine makes weird humming noises decelerating second gear...that wonderful boxer engine and its many wonderful sounds...it is completely normal I think.
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Old 05-07-2005, 11:07 PM   #15
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Quote:
Originally Posted by cerelius
Hi guys, "Turbo spooling up"? At 1500-2500 rpm... sounds kind of strange, I thought the turbo only kicks in after 3000.
The turbo doesn't suddenly start spinning at 3000 RPMs. It's spinning at lower RPMs just not enough to make a noticeable difference in power.

I have a somewhat quiet high pitched whine at around those RPMs. It definitely changes depending on how much I'm on the gas. If I'm off the gas, there's nothing. Once I give it more gas the sound is drowned out by engine and road noise. Sound familiar? If so you've got nothing to worry about.
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Old 05-08-2005, 12:35 AM   #16
scoobyzip
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what VSG said...when you press the gas the turbo starts to spool, the "kick in" you refer to is when you are making full boost...if the noise is during accel. then its the turbo spooling (normal) and on decel. the tranny seems to have a whine to it (seems to be a normal thing from everything i've read)...either way you have nothing to worry about imo
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Old 05-08-2005, 04:11 AM   #17
hystikal
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you guys are describing the turbo spool. it's not a disconcerting sound...it's sexual.
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Old 05-08-2005, 01:15 PM   #18
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Quote:
Originally Posted by drrice
yea dont put 87 or 89 back in and youneed a new fuel filter sir.... 87 and 89 is bad for it


but seriously... have you modded anything with the car? could be a pre-turbo exhaust leak if it happens above 3K rpm's
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Old 05-08-2005, 06:06 PM   #19
cerelius
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OMGHi2U

Hi, thanks for all the input, everyone. No, my car has not been modified yet -- embellished, yes; actually modified, no! I have to figure out its personality first!

But, from what everyone is saying, it sounds as if the screaming / whining / whooshing noise is most probably the turbo getting an early start at around 1500 rpm. If the turbo is so prevalent at lower rpm's, I wonder if it's actually able to go full capacity at higher rpms in my steed. Oh, and the screaming isn't a sexy noise to me -- purring, now that's sexy.
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Old 05-08-2005, 07:37 PM   #20
WRXakaBooSTi
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apparently this sound is normal on wrx's. when i first got my 04 i was worried about it too but got used to it. and after searching posts it seems most everyone has this problem, if it even is a problem. still, people cant figure out wat the noise is. with the music up youll never hear it again.
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Old 05-08-2005, 07:41 PM   #21
intence
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i get this "whirring" sound like something is winding up in the 1st 3 gears when i give it a little gas. at first i was worried but it hasnt caused my car any problems. could it possibly the synchros making the sound?
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Old 05-08-2005, 07:48 PM   #22
KingOfSiam
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^^^
That's exactly what I get, but I got the 4EAT. So I don't think it's the transmission.
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Old 05-08-2005, 10:08 PM   #23
vtecTHIS
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it's the turbo,synchros don't whine. they grind (if you **** up)
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Old 05-08-2005, 10:58 PM   #24
intence
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Quote:
Originally Posted by vtecTHIS
it's the turbo,synchros don't whine. they grind (if you **** up)
i know what my turbo sounds like as i have the intake silencer off. im positive this sound is not coming from my turbo. sounds like its from my tranny to me.
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Old 05-09-2005, 03:41 AM   #25
dubrXSti
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Quote:
Originally Posted by hystikal
you guys are describing the turbo spool. it's not a disconcerting sound...it's sexual.
how ever bad this sounds it is totally correct
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