what would cause this

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Jun 25, 2008 | 10:01 AM

#11

98gstspy

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Joined: Jul 2007

Posts: 302

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RE: what would cause this

i already cleaned it sand no diff really it seems more regulated as far as rpms moving it used to be all over thje place but not it only gos up and down 500

Jun 26, 2008 | 09:27 AM

#12

tjbiker031

Senior Member

Joined: Oct 2005

Posts: 689

From: Sarasota, FL

RE: what would cause this

somtime adjusting your BISS will fix it. but with saying that, that o-ring under the screw goes bad and needs to be replaced every so often...just something to check out. it might be letting in more air than it should throwing off the IAC reading.

Jun 26, 2008 | 01:13 PM

#13

plethoric33

Joined: Jun 2008

Posts: 14

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RE: what would cause this

I dont see how the IAC could cause a sound like that though. I think your turbo may be at the end of its life. And as far as a/c goes, it would only whine if it was on wouldnt it?

Jun 26, 2008 | 03:10 PM

#14

Sebba

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Joined: Feb 2006

Posts: 16,176

From: Austin, TX

RE: what would cause this

Okay seriously this thread is a cluster ****.

To check for the life of the turbo, pull off the intake and see if there is any movement in the turbo compressor. Wiggle it side to side, and in and out. Its normal to have about a 1mm to each side.

Try to pin point where the sound is coming from too. If the turbo is toast, thats more than likely where its coming from.

That does also look like an IAC failure to me, either that or a really bad vac leak.

So get back to us on the turbo.

Jun 26, 2008 | 04:17 PM

#15

dsm1990gsx

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Joined: Oct 2007

Posts: 4,682

From: Pa

RE: what would cause this

Quote:

ORIGINAL: Sebba

Okay seriously this thread is a cluster ****.

To check for the life of the turbo, pull off the intake and see if there is any movement in the turbo compressor. Wiggle it side to side, and in and out. Its normal to have about a 1mm to each side.

Try to pin point where the sound is coming from too. If the turbo is toast, thats more than likely where its coming from.

That does also look like an IAC failure to me, either that or a really bad vac leak.

So get back to us on the turbo.

Thank you!

Jun 26, 2008 | 06:25 PM

#16

estraw

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Joined: Dec 2005

Posts: 2,465

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RE: what would cause this

Quote:

ORIGINAL: plethoric33

I dont see how the IAC could cause a sound like that though. I think your turbo may be at the end of its life. And as far as a/c goes, it would only whine if it was on wouldnt it?

if you read my posts, i said that it sounds like the turbos on its way out, also that the iac is going. 2 seperate problems.

Jun 26, 2008 | 10:44 PM

#17

plethoric33

Joined: Jun 2008

Posts: 14

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RE: what would cause this

Quote:

ORIGINAL: estraw

Quote:

if you read my posts, i said that it sounds like the turbos on its way out, also that the iac is going. 2 seperate problems.

Im aware of this...but it just seems unlikely for 2 things to go completly crazy on him at the same time, which makes me think it could possibly be just one thing causing another to malfunction. That is, unless his idle was already acting kind of funny and he failed to mention it.

Jun 28, 2008 | 07:24 PM

#18

98gstspy

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Joined: Jul 2007

Posts: 302

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RE: what would cause this

ok well the sound is coming from the intake area. so i will try to see if it is my ac compressure doing it i turned it on when i started it so that is y that might be the whine. i am gonna order a iac and a biss screw gasket l8r tonight so that will get rid of the other problems. as far as the turbo goes that is ok because i hvae a 16g on sitting in the box still waiting to be put it . i wanted to fix this problem before moding it.

Jun 28, 2008 | 08:01 PM

#19

EMonz57

Senior Member

Joined: May 2005

Posts: 12,084

RE: what would cause this

boost leak will cause the idle to do that. I doubt that is a turbo death whine because the car is idleing the turbo wouldnt make any noise unlless he had no exhaust under the turbo.