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Jeffros Spec V · 11-28-2007, 08:13 PM

So I have this noise. Hardly noticeable at idle, if I blip the throttle (while not in gear) you can hear it wind up and then when the RPM's drop it goes away. Kinda doesn't do it when under load.

I've searched Nasioc for "inlet noise" and "weird noise" and found a bunch of threads with what I think is the same noise but to no conclusions. To be honest it sounds like the ball bearings in the turbo are ****ed but I took it out and no shaft play and it spins nice and smoothly. The noise is coming from the turbo area (or so it seems.) This noise was not occurring until I did turbo inlet, catch can, new front (header) o2 sensor.

I need to figure this out, if you find it I'll buy you a case of beer, your choice (under $30)

redline · 11-28-2007, 08:35 PM

Do a boost leak test and spray everything down with soapy water and I bet you find your boost/vac leak?

hypntcpimp · 11-28-2007, 09:09 PM

throw out bearing?

Vypurr · 11-28-2007, 09:12 PM

Is the noise a whistle, grind, exhaust leak? What does it sound like? It only happens when you just blip the throttle in neutral? Does it make it while driving?

doug · 11-28-2007, 09:17 PM

Quote:

Originally Posted by hypntcpimp

throw out bearing?

+1 that's what I was thinking.

MY98turboRS · 11-28-2007, 10:37 PM

Turbo inlet? Is it a metal intake? If so You turbo will make a funny whistle whine noise when you blip the throttle. You here this now because your intake makes the sound reverberate(sp) or echo/amplify it.
-mike-

MY98turboRS · 11-28-2007, 10:41 PM

I don't think it is the throw out bearing cause that would be if your clutch is depressed and you would prob hear a little chatter as well when you are sitting there. The stock intake hides all the different noises for people who aren't turbo enthusiasts and intake mods get rid of the refinement stock airboxes and pipes try to conceal.
-mike-

teh DIRT · 11-28-2007, 10:57 PM

oohh mee meee mee. Uppipe leak son.

Jeffros Spec V · 11-29-2007, 10:09 AM

Quote:

Originally Posted by teh DIRT

oohh mee meee mee. Uppipe leak son.

Tight and has new gasket.

I think it's coiming from my TGV's or that area....

teh DIRT · 11-29-2007, 10:25 AM

Hmm, is it whistling? How is your idle? If you are getting a leak after your MAF sensor you will have a bad idle depending on how much air is getting through.

Jeffros Spec V · 11-29-2007, 11:27 AM

Quote:

Originally Posted by teh DIRT

Hmm, is it whistling? How is your idle? If you are getting a leak after your MAF sensor you will have a bad idle depending on how much air is getting through.

Well I threw P0102 and P0113 and went and checked out my MAF. The two screws that held the maf into my intake were loose and I guess air was getting around. I tightened them and that went away.

I am however also getting a whistling that i'm not sure if the inlet makes it sound this way or something else.

The noise is driving me freaking crazy though.

redline · 11-29-2007, 06:28 PM

Quote:

Originally Posted by Jeffros Spec V

Well I threw P0102 and P0113 and went and checked out my MAF. The two screws that held the maf into my intake were loose and I guess air was getting around. I tightened them and that went away.

I am however also getting a whistling that i'm not sure if the inlet makes it sound this way or something else.

The noise is driving me freaking crazy though.

Just go back through it and tighten everything and look for unevenly tightened bolts and flanges.

Jeffros Spec V · 11-29-2007, 07:38 PM

Quote:

Originally Posted by redline

Just go back through it and tighten everything and look for unevenly tightened bolts and flanges.

I'll be at the meet tonight for anybody that wants to figure it out.

foolio · 11-29-2007, 08:05 PM

Sounds like you may be right with the turbo problem. Go rev the car up and turn the key off, good way to see if the turbo is making noise.

malloyboy1 · 11-29-2007, 08:25 PM

find someone what will let you use a lift. put the car up on the lift. have one person listen and the other operate the car.

Buster · 11-29-2007, 08:28 PM

.....Jeff, I think its time to let her go lol

Vince@R/TTuning · 11-29-2007, 09:57 PM

this may sound stupid(but u would be suprised what i see) if you plumed your catch can on the vacumn side of pcv(breather) system it will wistle pretty good

teh DIRT · 11-30-2007, 07:27 AM

I checked it out last night and gave him my diagnosis, hopefully I am wrong. Its not a whistle, its more or a metal shaking/scraping noise in my opinion.

Honest_Bob · 11-30-2007, 08:55 AM

Quote:

Originally Posted by teh DIRT

I checked it out last night and gave him my diagnosis, hopefully I am wrong. Its not a whistle, its more or a metal shaking/scraping noise in my opinion.

rod bearings!?

teh DIRT · 11-30-2007, 09:23 AM

no, not rod bearings. thatd be super bad.

11-28-2007, 08:13 PM	#1
Jeffros Spec V Tri-State Post Whore Join Date: Mar 2005 Location: Langhorne PA Member #263 iTrader: (0)	Find noise: Win case of beer: NOISE IS FIXED So I have this noise. Hardly noticeable at idle, if I blip the throttle (while not in gear) you can hear it wind up and then when the RPM's drop it goes away. Kinda doesn't do it when under load. I've searched Nasioc for "inlet noise" and "weird noise" and found a bunch of threads with what I think is the same noise but to no conclusions. To be honest it sounds like the ball bearings in the turbo are ***ed but I took it out and no shaft play and it spins nice and smoothly. The noise is coming from the turbo area (or so it seems.) This noise was not occurring until I did turbo inlet, catch can, new front (header) o2 sensor. I need to figure this out, if you find it I'll buy you a case of beer, your choice (under $30) Last edited by Jeffros Spec V; 12-10-2007 at 12:17 AM.*

11-28-2007, 08:35 PM	#2
redline Tri-State Post Whore Join Date: Aug 2005 Location: Kaiserslautern, Germany Member #784 iTrader: (1)	Do a boost leak test and spray everything down with soapy water and I bet you find your boost/vac leak? __________________ 2006 Evo 9 Special Edition

11-29-2007, 08:28 PM	#16
Buster TST Ruined My Life! Join Date: May 2005 Location: Holland Pa Member #449 My Ride: 2008 Mustang GT/CS iTrader: (3)	.....Jeff, I think its time to let her go lol __________________ III To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

11-29-2007, 09:57 PM	#17
Vince@R/TTuning Vendor Join Date: Mar 2007 Location: telford Pa Member #3958 My Ride: the one in the back of the shop iTrader: (2)	this may sound stupid(but u would be suprised what i see) if you plumed your catch can on the vacumn side of pcv(breather) system it will wistle pretty good __________________ Philadelphia Area's Only Authorized and Factory Trained Pro Tuners for:HONDATA:UPREV:APEXI POWER FC:AEM:COBB:ECUTEK To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

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11-28-2007, 09:09 PM	#3
hypntcpimp Tri-State Aficionado Join Date: Sep 2007 Member #5792 My Ride: 1998 gst iTrader: (0)	throw out bearing?

11-28-2007, 10:37 PM	#6
MY98turboRS Tri-State Aficionado Join Date: Sep 2007 Location: lake wallenpaupack Member #5719 My Ride: 1998 subaru impreza 2.5rs iTrader: (1)	Turbo inlet? Is it a metal intake? If so You turbo will make a funny whistle whine noise when you blip the throttle. You here this now because your intake makes the sound reverberate(sp) or echo/amplify it. -mike-

11-28-2007, 10:41 PM	#7
MY98turboRS Tri-State Aficionado Join Date: Sep 2007 Location: lake wallenpaupack Member #5719 My Ride: 1998 subaru impreza 2.5rs iTrader: (1)	I don't think it is the throw out bearing cause that would be if your clutch is depressed and you would prob hear a little chatter as well when you are sitting there. The stock intake hides all the different noises for people who aren't turbo enthusiasts and intake mods get rid of the refinement stock airboxes and pipes try to conceal. -mike-

11-29-2007, 08:05 PM	#14
foolio Tri-State Aficionado Join Date: Mar 2007 Member #4097 My Ride: 2000 GC/Swap iTrader: (0)	Sounds like you may be right with the turbo problem. Go rev the car up and turn the key off, good way to see if the turbo is making noise.

11-29-2007, 08:25 PM	#15
malloyboy1 Tri-State Addict Join Date: Jul 2007 Location: sellersville, PA Member #5438 My Ride: 05 subaru wrx iTrader: (2)	find someone what will let you use a lift. put the car up on the lift. have one person listen and the other operate the car.