Weird noise coming from my engine...

Sjerzey05sti · 01-29-2005, 12:05 PM

Last night I was driving my car home and kept hearing a weird noise under boost. It is like a howling, shreeking noise. Similar to when you have the window down alittle bit and air rushes through it and makes a noise. It isn't overly loud but loud enough as to where I can still hear it with the windows up. It sounds like its coming from the left side of the motor which is weird because I thought it might be the turbo. Anyone have any ideas??

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BoostdBoxer · 01-29-2005, 01:13 PM

Just reseat the gasket on the Bypass valve and that will fix your problem..if that is the problem.

Cheers

Sjerzey05sti · 01-29-2005, 02:21 PM

I think you are right on the money there. But I think I need a new one. It looks like it peeled away from the intercooler. But thanks for the help you just saved me alot of time of searching.

Sjerzey05sti · 01-29-2005, 11:50 PM

I drove my car to work today and it took 6.5 gallons to go 57 miles. Do you think that if the gasket was leaking it would cause that? Or is the possible leaking gasket only one of my problems?

Uncle Scotty · 01-29-2005, 11:54 PM

...fix the gasket, and go from there....

powerslide23 · 01-30-2005, 12:06 AM

Quote:

Originally Posted by Sjerzey05sti

I drove my car to work today and it took 6.5 gallons to go 57 miles. Do you think that if the gasket was leaking it would cause that? Or is the possible leaking gasket only one of my problems?

Already on a '05 STi? I wpuld think this is a warranty issue unless you abused it.

Sjerzey05sti · 01-30-2005, 12:18 AM

I'd rather just do it myself then waste a whole day at the dealer. Plus Miller Subaru sucks alot.

blinguskahn · 01-30-2005, 12:31 AM

Quote:

Originally Posted by Sjerzey05sti

I drove my car to work today and it took 6.5 gallons to go 57 miles. Do you think that if the gasket was leaking it would cause that? Or is the possible leaking gasket only one of my problems?

Wow, that is worse than my mileage with the Green (11.7mpg)! But seriously, having a boost leak can cause you to run very rich.

Sjerzey05sti · 01-30-2005, 12:35 AM

I seem to still be making 1.2bar but that stock gauge isn't very accurate. But good to hear that its normal. Its way to cold out to be tearing things apart.

Uncle Scotty · 01-30-2005, 12:38 PM

....so did you put a 'BOV' on it at some point???

Sjerzey05sti · 01-30-2005, 06:30 PM

Yes, but its a BPV and I replaced the gasket on it.

2phless · 01-30-2005, 06:52 PM

Quote:

Originally Posted by Sjerzey05sti

I'd rather just do it myself then waste a whole day at the dealer. Plus Miller Subaru sucks alot.

Join www.subarusti.org and share that info in the dealer rating setup they have.

Uncle Scotty · 01-30-2005, 07:23 PM

Quote:

Originally Posted by Sjerzey05sti

Yes, but its a BPV and I replaced the gasket on it.

Ya got a leak there, somewhere....fix it asap.

Sjerzey05sti · 02-03-2005, 07:15 PM

Alright I put a new gasket on and put the stock "BPV" back on and its still making that howling noise. I didn't think it was just the gasket since I wasn't leaking any boost. But that gasket was shot. So any other ideas guys?? I checked everything and can't seem to find anything.

ranmaru · 02-04-2005, 04:38 AM

i have the same prob but it is only at about 4k rpm and under very light boost. If i press the gas a little harder it stops. very confusing

It is like a droning sound. Only when i shift gears and press the gas hard enough to just start to boost.

Subaru Gwinnett · 02-05-2005, 01:20 AM

Check the silicone hose between the intercooler and throttle body. They make CRAZY noises when the hose clamp has slipped.

Quite often they will leak at exactly the same boost pressure, it's pretty funny sometimes.

Sjerzey05sti · 02-05-2005, 05:15 PM

The hose is pushed all the way against the IC and looks like its about a 1/2" off the TB where the stopper part that holds the hose from going over the front of the TB(if that makes sense). So as soon as I get home from work ill have to try moving. Thanks for all the helps guys.

kool168 · 02-05-2005, 09:35 PM

Quote:

Originally Posted by Sjerzey05sti

The hose is pushed all the way against the IC and looks like its about a 1/2" off the TB where the stopper part that holds the hose from going over the front of the TB(if that makes sense). So as soon as I get home from work ill have to try moving. Thanks for all the helps guys.

i am just wondering... why that hose will always lose? i tried to put it back twice already... and today when i was filling gas, so i check the enigne oil too. then i found the hose which connects TB and IC lose again..

Subaru Gwinnett · 02-06-2005, 01:41 AM

It's REALLY annoying isn't it. I blew 20+ mins on more than one tune session. Now I check that before I even start tuning.

Samco makes a longer hose, I believe the sexy pink one from SPT is longer too.

Generally we loosen all the IC bolts, pull it forward and tighten them back down.

Siegel

01-29-2005, 12:05 PM	#1
Sjerzey05sti Scooby Newbie Member#: 75309 Join Date: Nov 2004 Location: Dirty S. jersey Vehicle: 05 STI CGM GT35r	Weird noise coming from my engine... Last night I was driving my car home and kept hearing a weird noise under boost. It is like a howling, shreeking noise. Similar to when you have the window down alittle bit and air rushes through it and makes a noise. It isn't overly loud but loud enough as to where I can still hear it with the windows up. It sounds like its coming from the left side of the motor which is weird because I thought it might be the turbo. Anyone have any ideas?? * Registered users of the site do not see these ads.

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01-29-2005, 01:13 PM	#2
BoostdBoxer Scooby Newbie Member#: 53163 Join Date: Jan 2004	Just reseat the gasket on the Bypass valve and that will fix your problem..if that is the problem. Cheers

01-29-2005, 02:21 PM	#3
Sjerzey05sti Scooby Newbie Member#: 75309 Join Date: Nov 2004 Location: Dirty S. jersey Vehicle: 05 STI CGM GT35r	I think you are right on the money there. But I think I need a new one. It looks like it peeled away from the intercooler. But thanks for the help you just saved me alot of time of searching.

01-29-2005, 11:50 PM	#4
Sjerzey05sti Scooby Newbie Member#: 75309 Join Date: Nov 2004 Location: Dirty S. jersey Vehicle: 05 STI CGM GT35r	I drove my car to work today and it took 6.5 gallons to go 57 miles. Do you think that if the gasket was leaking it would cause that? Or is the possible leaking gasket only one of my problems?

01-29-2005, 11:54 PM	#5
Uncle Scotty NASIOC Supporter Member#: 16200 Join Date: Mar 2002 Vehicle: OK Houston we have an Uncle	...fix the gasket, and go from there....

01-30-2005, 12:18 AM	#7
Sjerzey05sti Scooby Newbie Member#: 75309 Join Date: Nov 2004 Location: Dirty S. jersey Vehicle: 05 STI CGM GT35r	I'd rather just do it myself then waste a whole day at the dealer. Plus Miller Subaru sucks alot.

01-30-2005, 12:35 AM	#9
Sjerzey05sti Scooby Newbie Member#: 75309 Join Date: Nov 2004 Location: Dirty S. jersey Vehicle: 05 STI CGM GT35r	I seem to still be making 1.2bar but that stock gauge isn't very accurate. But good to hear that its normal. Its way to cold out to be tearing things apart.

01-30-2005, 12:38 PM	#10
Uncle Scotty NASIOC Supporter Member#: 16200 Join Date: Mar 2002 Vehicle: OK Houston we have an Uncle	....so did you put a 'BOV' on it at some point???

01-30-2005, 06:30 PM	#11
Sjerzey05sti Scooby Newbie Member#: 75309 Join Date: Nov 2004 Location: Dirty S. jersey Vehicle: 05 STI CGM GT35r	Yes, but its a BPV and I replaced the gasket on it.

02-03-2005, 07:15 PM	#14
Sjerzey05sti Scooby Newbie Member#: 75309 Join Date: Nov 2004 Location: Dirty S. jersey Vehicle: 05 STI CGM GT35r	Alright I put a new gasket on and put the stock "BPV" back on and its still making that howling noise. I didn't think it was just the gasket since I wasn't leaking any boost. But that gasket was shot. So any other ideas guys?? I checked everything and can't seem to find anything.

02-04-2005, 04:38 AM	#15
ranmaru Scooby Newbie Member#: 52050 Join Date: Jan 2004	i have the same prob but it is only at about 4k rpm and under very light boost. If i press the gas a little harder it stops. very confusing It is like a droning sound. Only when i shift gears and press the gas hard enough to just start to boost.

02-05-2005, 01:20 AM	#16
Subaru Gwinnett Vendor Member#: 23050 Join Date: Aug 2002 Location: www.sogperformance.com	Check the silicone hose between the intercooler and throttle body. They make CRAZY noises when the hose clamp has slipped. Quite often they will leak at exactly the same boost pressure, it's pretty funny sometimes.

02-05-2005, 05:15 PM	#17
Sjerzey05sti Scooby Newbie Member#: 75309 Join Date: Nov 2004 Location: Dirty S. jersey Vehicle: 05 STI CGM GT35r	The hose is pushed all the way against the IC and looks like its about a 1/2" off the TB where the stopper part that holds the hose from going over the front of the TB(if that makes sense). So as soon as I get home from work ill have to try moving. Thanks for all the helps guys.

02-06-2005, 01:41 AM	#19
Subaru Gwinnett Vendor Member#: 23050 Join Date: Aug 2002 Location: www.sogperformance.com	It's REALLY annoying isn't it. I blew 20+ mins on more than one tune session. Now I check that before I even start tuning. Samco makes a longer hose, I believe the sexy pink one from SPT is longer too. Generally we loosen all the IC bolts, pull it forward and tighten them back down. Siegel