2004 GTP whistling noise. Now with video
- haro1225
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2004 GTP whistling noise. Now with video
There is a whistling noise that I can't pinpoint on my car. It happened a lot during the winter but it seemed to go away after a car wash. It hasn't done it in a while but it's back, only while the engine is running. It can be heard inside and outside the car and does not change with speed or RPMs. I have taken the access cover for the fuel pump off and it is not coming from there. It's starting to drive me crazy. I know I'm not crazy since Matt and his brother heard it too. Thoughts?
Last edited by haro1225 on Sun Apr 19, 2015 11:36 am, edited 1 time in total.

-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro
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- nos4blood70
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Re: 2004 GTP whistling noise.
Can you localize it even slightly?
- haro1225
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Re: 2004 GTP whistling noise.
I checked around a bit more and it's on the left hand side and a bit louder underneath. I even tried to duplicate the conditions of the touchless carwash and sprayed the underside of the car and nothing changed. I did drive it a bit after work when I went to get dinner and it is intermittent now.

-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro
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- RJolly87
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Re: 2004 GTP whistling noise.
Possibly an evap vacuum leak?
~Randall~


1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place


1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place
- haro1225
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Re: 2004 GTP whistling noise.
I was thinking that but now the noise has stopped, I'm sure it will be back and I'll poke around when it does and also get a video of it as well.

-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro
yourgrandma wrote:Hi.
- CMNTMXR57
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Re: 2004 GTP whistling noise.
Does it happen only upon cold startup and last for about a minute or two?
If so, I'm leaning towards the electric motor for Seconday A.I.R. It's over in the left front corner.
If so, I'm leaning towards the electric motor for Seconday A.I.R. It's over in the left front corner.

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- haro1225
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Re: 2004 GTP whistling noise.
When it happens it does it no matter what while the engine is running. Cold starts, warm starts, and even during long drives. I almost thought it was the speakers and then I disconnected all of them and no change.

-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro
yourgrandma wrote:Hi.
- haro1225
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Re: 2004 GTP whistling noise. Now with video
I got a video of the noise.
http://youtu.be/Buh5d9lbRDg
http://youtu.be/Buh5d9lbRDg

-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro
yourgrandma wrote:Hi.
- Backhoe
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Re: 2004 GTP whistling noise. Now with video
I just came across a description of a similar whistling on a Monte, apparently there was a missing o-ring on the PCV.

1998 Olds LSS/L67, 92K miles, Intense FWI, SSAC headers, 3.2 MPS, cat delete, 180 stat, AL 103's, HPT.
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- haro1225
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Re: 2004 GTP whistling noise. Now with video
I figured it out. This sounds really dumb but it was coming from the fuel lines near the filter. If they touched a certain way they made the noise. I pushed them away from each other and it stopped.

-Ryan
2004 GTO....LS1, LSA supercharged 525whp, 6MT
96 SSEi...September 2010 COTM........GONE
04 GTP comp G.... December 2015 COTM........GONE
2013 Audi Allroad Quattro
yourgrandma wrote:Hi.


