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ballcock
Sepang


Joined: 22 Jul 2008
Posts: 2807
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Fri Jul 14, 2017 10:07 am    Post subject: Annoying Noise from Passenger Vent Area. Any removal tips? Reply with quote

Thought I'd ask if anyone else has experienced this?

Im getting a faint 'tick' like plastic tapping , only heard when driving over B roads/uneven surfaces.
I'm pretty sure it's either from the dash area behind the passenger vent, or perhaps the petrol flap release mechanism.

Has anyone done work in this area that could gives some hints as to vent removal?

Thanks!

Barney.
_________________
'96 Iris C2 vario manual coupe, Koni FZD's/M033's RSR's and HID's.
'83 W460 LWB G Wagen updated with OM602 engine and 6 speed 'box ...My daily driver

Ex. '99 996 C2 manual coupe.
 
  
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gunner
Montreal


Joined: 04 Jul 2014
Posts: 568
Location: Kent


PostPosted: Fri Jul 14, 2017 11:42 am    Post subject: Reply with quote

I sometimes get a whining from a similar area whenever I drive enthusiastically.

That's why I usually drive alone...
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993 C2 Tip Aventura
 
  
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Cameltoe & Heel
Österreich


Joined: 26 Jan 2009
Posts: 957
Location: Preston - Lancs


PostPosted: Fri Jul 14, 2017 11:51 am    Post subject: Reply with quote

Can sometimes be a dry leaf stuck in the system blowing around, sorry no tips for removal.

Trev
 
  
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kerb scraper
Spa-Francorchamps


Joined: 25 May 2012
Posts: 343
Location: Hertfordshire

1997 Porsche 993 Carrera 4

PostPosted: Fri Jul 14, 2017 12:30 pm    Post subject: Reply with quote

Have you checked the press studs securing the carpet in the frunk? If not fastened, they can make a tapping noise in that area.

I recall trying to remove one of the vents on the dash end unsuccessfully - there are spring clips top and bottom which you are allegedly able to depress by pushing in something thin and flexible but I gave up at the time.
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1997 C4 Cabriolet, Arctic Silver, black interior, 18" hollow spokes, Bilstein PSS10s, RSRs, 200 cell cats, Mobil 1 sticker, LED to interior. Bergville t-lights.
 
  
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Mike-M
Monza


Joined: 28 Jan 2010
Posts: 245



PostPosted: Fri Jul 14, 2017 7:30 pm    Post subject: Reply with quote

Could be the fan in the bulkhead running out of balance. Had it on mine, I could see where it was rubbing and filed the rough off the vein. Problem solved. Its the fan that sits inside the polen filter IIRC.
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1994 Aventura 993 C2 manual
 
  
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ballcock
Sepang


Joined: 22 Jul 2008
Posts: 2807
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Sat Jul 15, 2017 1:16 am    Post subject: Reply with quote

Thanks all for the replies.
I generally drive alone.. so it's just ticking , no nagging noises!
I've checked the buttons, all fastened.
I don't think it's a fan noise, it only comes when the car is on the move and consistent with going over bumps, or rough surfaces.
I suppose it sounds like two plastic surfaces lightly tapping off each other in tune with bumps.
I'm surprised nobody else has had this, these cars are very predictable when it comes to foibles!
_________________
'96 Iris C2 vario manual coupe, Koni FZD's/M033's RSR's and HID's.
'83 W460 LWB G Wagen updated with OM602 engine and 6 speed 'box ...My daily driver

Ex. '99 996 C2 manual coupe.
 
  
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nigel99
Suzuka


Joined: 16 Jul 2015
Posts: 1027
Location: Surrey

2009 Porsche 997 Carrera 2S

PostPosted: Sat Jul 15, 2017 6:32 am    Post subject: Reply with quote

gunner wrote:
I sometimes get a whining from a similar area whenever I drive enthusiastically.

That's why I usually drive alone...


I have the same issue, regardless of which car I'm driving. Floor Floor
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Current: 2009 997.2 C2S, 1999 Audi A3
Previous: 2008 Cayman 2.7, 2002 Audi TT, 1999 BMW 318!
 
  
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nigel99
Suzuka


Joined: 16 Jul 2015
Posts: 1027
Location: Surrey

2009 Porsche 997 Carrera 2S

PostPosted: Sat Jul 15, 2017 6:37 am    Post subject: Reply with quote

In answer to the OPs question, I believe there is a cable behind the dash, by the vent, that becomes loose and causes a tapping noise. If you remove the side panel from the dash you can see it and re-secure it. I have the same issue but keep forgetting to do this!
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Current: 2009 997.2 C2S, 1999 Audi A3
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Pretzel
Montreal


Joined: 20 Apr 2014
Posts: 602
Location: Bedfordshire


PostPosted: Sat Jul 15, 2017 9:15 am    Post subject: Reply with quote

It is also worth checking that the air-bag cover isn't the cause of the noise.

Easily done using a plastic credit card as a feeler gauge placed in the gap around the cover.
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ballcock
Sepang


Joined: 22 Jul 2008
Posts: 2807
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Sat Jul 15, 2017 3:30 pm    Post subject: Reply with quote

Thanks guys ... @ Nigel, I'm not sure what side panel you're referring to, is it a sc off panel?
Anyway I'll give both suggestions a shot and report back in a few days when home.
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'96 Iris C2 vario manual coupe, Koni FZD's/M033's RSR's and HID's.
'83 W460 LWB G Wagen updated with OM602 engine and 6 speed 'box ...My daily driver

Ex. '99 996 C2 manual coupe.
 
  
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