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love154
Trainee


Joined: 18 Dec 2018
Posts: 75



PostPosted: Mon Jan 21, 2019 1:33 pm    Post subject: Vibrating Noice sound like its coming from front Reply with quote

Took the car our for a spin yesterday and now have a Vibrating Noice sound. it sounds like its coming from front and only doing it on idle and not all the time and i can only hear it it inside. wont allow me to attach the sound

997.2 c4s my2009


thanks for looking
 
  
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love154
Trainee


Joined: 18 Dec 2018
Posts: 75



PostPosted: Mon Jan 21, 2019 2:28 pm    Post subject: Reply with quote

any body no what sound file it needs to be to upload
 
  
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Phil 997
Le Mans
Le Mans


Joined: 05 Dec 2015
Posts: 15279
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Mon Jan 21, 2019 3:09 pm    Post subject: Reply with quote

Is it inside or outside the cockpit, can you hear it from outside the car.
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jonno_
Nürburgring


Joined: 29 May 2014
Posts: 408
Location: Oxfordshire

2005 Porsche 997 Carrera 2S

PostPosted: Mon Jan 21, 2019 5:03 pm    Post subject: Reply with quote

Rather tricky without more info, but there is a documented issue with rattling A/C lines up front I think. One of them (feed or return) comes out of a clip.

Post up more details and we can try to help a bit.
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infrasilver
Fast & Furious
Fast & Furious


Joined: 04 Oct 2010
Posts: 8323
Location: East Midlands

2001 Porsche 996 Targa

PostPosted: Mon Jan 21, 2019 5:43 pm    Post subject: Reply with quote

Have a walk around the car with it idling and see if you can pinpoint an area that the noise is coming from.
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Magic919
Suzuka


Joined: 05 Jun 2013
Posts: 1197
Location: Berkshire


PostPosted: Mon Jan 21, 2019 5:56 pm    Post subject: Reply with quote

Stick a video on YouTube and paste a link here.
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6987
Location: Brighton


PostPosted: Mon Jan 21, 2019 7:29 pm    Post subject: Reply with quote

Email me the video and ill upload it to you tube and post it here if you dont have a you tube account ..

De.Mort@virginmedia.com
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love154
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Joined: 18 Dec 2018
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PostPosted: Mon Jan 21, 2019 9:46 pm    Post subject: Reply with quote

thanks just sent you and email
 
  
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6987
Location: Brighton


PostPosted: Tue Jan 22, 2019 7:50 pm    Post subject: Reply with quote

Ive emailed you back , the file is audio only so needs to be a video as youtube doesnt do just audio .. i tryed .

As per email .. it sounds like a loose undertray.

If you can do a video ill upload it here .
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6987
Location: Brighton


PostPosted: Thu Jan 24, 2019 6:55 pm    Post subject: Reply with quote

Video of the noise ..

https://youtu.be/-yBW4vV5jJs

Strange one .
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jl-c
Monza


Joined: 22 Jul 2013
Posts: 160
Location: Shropshire


PostPosted: Thu Jan 24, 2019 7:09 pm    Post subject: Reply with quote

I will be watching with interest, no idea at all.
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6987
Location: Brighton


PostPosted: Thu Jan 24, 2019 8:11 pm    Post subject: Reply with quote

Can i just confirm .. this is at idle , you are not turning the steering wheel and its from the front or the rear ?

Can you hear it outside of the car or only inside ? if so is it more right or more left ?
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love154
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Joined: 18 Dec 2018
Posts: 75



PostPosted: Thu Jan 24, 2019 8:24 pm    Post subject: Reply with quote

its from idol and sound like its coming from the front right. dont happen all the time just now and then. started the car tonight and have no knocking but only had it running for a few mins
 
  
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6987
Location: Brighton


PostPosted: Thu Jan 24, 2019 8:41 pm    Post subject: Reply with quote

OK .. do me a favour .. when the noise starts slowly turn the steering wheel to either the left or the right .. hold it on full lock and see if the noise changes .

My best guess atm .. a steering rack pipe is not in its bracket and is vibrateing against the body work .

At the end of the day if stationary then there is no movement from any suspension component .. there is no wind flow to cause a loose undertray to vibrate .. there is very little actually going on .
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love154
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PostPosted: Thu Jan 24, 2019 8:46 pm    Post subject: Reply with quote

no prob ill do that when i get it out next

thanks for the help
 
  
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sp1ke
Trainee


Joined: 07 May 2009
Posts: 63



PostPosted: Thu Jan 24, 2019 8:46 pm    Post subject: Reply with quote

If deMort's suggestion doesn't help then it might be useful to turn the aircon & heating completely off, & see if you can still reproduce the same noise.
 
  
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6987
Location: Brighton


PostPosted: Thu Jan 24, 2019 9:05 pm    Post subject: Reply with quote

A/C low gass is a good call and not one i had thought about .. its a bit different noise than what im used to with this but well worth considering Thumb
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love154
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Joined: 18 Dec 2018
Posts: 75



PostPosted: Sat Jan 26, 2019 5:57 pm    Post subject: Reply with quote

If the weather is nice tomorrow I’ll get it out and take a look
 
  
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love154
Trainee


Joined: 18 Dec 2018
Posts: 75



PostPosted: Sun Jan 27, 2019 2:39 pm    Post subject: Reply with quote

Right I got the car out today and the knocking noice started about 20 mins after starting. I then turned the fans/heating off and the sound stops. So guessing it’s some thing to do with the a/c. Any body had this before

Thanks for the help
 
  
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jonno_
Nürburgring


Joined: 29 May 2014
Posts: 408
Location: Oxfordshire

2005 Porsche 997 Carrera 2S

PostPosted: Sun Jan 27, 2019 4:05 pm    Post subject: Reply with quote

Looks like Spike called it - suspect low gas in the a/c lines.
Does the climate chill properly?

I'd get it checked before just getting it refilled. Likely to be due to a rotten condenser. Any history of replacement?
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