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Old Feb 25, 2002 | 09:18 AM
  #1  
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Post Drafty

On a very cold day, and at speed, I can feel a steady draft of air coming from the large front speaker on the driver's side door panel.

Is this normal? What is the likely source?

On other cars, I've seen a thick plastic lining between the door panel and the metal part of the door, presumably to block such drafts...does our beloved 964 lack such a lining? Or, perhaps mine has simply developed a leak?
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Old Feb 25, 2002 | 09:31 AM
  #2  
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Dear Robert,
I am sure you will find that the plastic inner liner is torn. This is not uncommon in 964s that have had problems with windows.
The only way to fix this is to remove the speaker and try and seal things up again,
Ciao,
Adrian
911C4

PS: One other thing to look at is the source of the airflow. Is the door sealed correctly. There is also a cap assembly on the top forward leading edge of the door, is this intact, in place.
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Old Feb 25, 2002 | 09:55 AM
  #3  
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Robert: I don't know if this is what Adrian is referring to, but there is a rubber plug, about the size of a quarter, at the BOTTOM of the door, front, near the hinge. If this is missing, you will have a draft. If you don't have the correct sized plug, take a piece of 100 mph tape (technical military term) and slap over the opening. See if that makes the difference.
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Old Feb 25, 2002 | 10:29 AM
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Robert, actually this plug seems to be a 1-way valve. Very thin, and kinda keys into the hole. I suspect that the weight of water in the door will open it. I used the 100 mph tape fix on one of my doors, because my 930 had exactly the same thing, and that was the Porsche recommeded fix. There are other drain holes, so closing that one off probably would not be a problem...
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Old Feb 25, 2002 | 10:38 AM
  #5  
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Dear Horst,
There is also one at the top of the door as well. Sort of rectangular with trimmed curved edges. Made of hard plastic. They do come out and are easily lost. There is a TSB along the lines you have mentioned. I used a few extra bits of rubber stick on strip to solve draft problems around the front of the doors. The door seals get compressed and stay that way. This has been discussed before. If water can get in so can the airflow,
Ciao,
Adrian
911C4

Here is the Text from the TSB.
Air Leak at the Door Panel

911

1/97

7059

10/21/97

Binder-Service Technical Bulletins

Air Leak at the Door Panel

Vehicle Type:
911 Carrera (964 and 993)
911 Turbo (964 and 993)

Model Year:
As of Model Year 1989

Concern:
Air drafts in the area of the inner door opener.

Modification:
As of April 1, 1997 from VIN: 99 1VS322950

From the above-mentioned VIN a felt piece is installed in the inner door opener (Figure 1). This significantly reduces air drafts from the area of the inner door opener. The felt piece may be installed in earlier vehicles.

Repairs:
Installation of felt piece.

Disconnect the door opener rod, inner door cover and pull handle.

Lay felt piece onto the inside of the inner door opener, and mark with a pen or suitable marker (Figure 1).

Important : The pointed part of the felt piece must point forward in the driving direction.

Apply glue on the marked area of the inner door panel and install the felt piece.

Reinstall the pull handle, inner door cover, and the door opener rod.

Important : Avoid damaging the felt piece by carefully pushing the door opener rod through the slot in the felt (Figure 1, arrow).

Parts:
993 555 715 00 Felt
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Old Nov 11, 2021 | 02:36 AM
  #6  
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Hi everyone,

I know this is a very old thread......

Does maybe someone have a pdf copy of the above mentioned TSB?

Many thanks and kind regards

Christoph
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Old Nov 11, 2021 | 07:26 PM
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Here you go

Attached Files
File Type: pdf
7059_1997_670097geolab.pdf (25.4 KB, 93 views)
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Old Nov 12, 2021 | 01:26 AM
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Thanks RicardoD!!
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