Menu toggle

Noisy internal ventilation/heater motor/fan

Author
blease
PCGB Member
  • Total Posts : 386
  • Joined: 2000/07/13 15:20:00
  • Status: offline
blease PCGB Member
2021/06/11 15:43:32 (permalink)

Noisy internal ventilation/heater motor/fan

Hi all,
I've done a thread search and looked at 996 technical articles but I cannot find anything about a noisy internal ventilation motor/fan. Its getting quite intrusive now, even at low fan speed settings. Is checking/changing this simple or involved? Would apprecoate some guidance.
Many thanks, Simon


996 C2 Cabriolet
Previous cars - '84 3.2 Carrera, 944 S2 Track Toy and '85 930 Turbo.

7 Replies

Richard_Hamilton
PCGB Member
  • Total Posts : 8209
  • Joined: 2004/10/08 11:07:01
  • Status: offline
Richard_Hamilton PCGB Member
Re: Noisy internal ventilation/heater motor/fan 2021/06/11 16:07:55 (permalink)
It might be debris in the fan blades, which I have heard of happening on more than one occasion.  Take out the pollen filter and take a look in the opening.  You might find something stuck in the fan.  Other than that, if you want the instructions on how to remove the fan, drop me a PM with your email address a,d I'll extract them from the workshop manual.

Richard
2017 Cayman S & Audi RSQ3
Previous:
1989 3.2 Carrera Sport, 2012 Cayman 2.9 PDK, 2006 Cayman S, 2000 996 Turbo, 1998 996 C2, 1994 993 C2
blease
PCGB Member
  • Total Posts : 386
  • Joined: 2000/07/13 15:20:00
  • Status: offline
blease PCGB Member
Re: Noisy internal ventilation/heater motor/fan 2021/06/11 16:35:25 (permalink)
Actually, I'm so sorry. I did a google search and found out its very simple on Pelican Parts. Its mainly a question of getting the correct part. There is a difference between 1998 and 1999 MYs. I have 1998.


996 C2 Cabriolet
Previous cars - '84 3.2 Carrera, 944 S2 Track Toy and '85 930 Turbo.
andywill
PCGB Member
  • Total Posts : 9370
  • Joined: 2006/12/18 16:24:46
  • Status: offline
andywill PCGB Member
Re: Noisy internal ventilation/heater motor/fan 2021/06/11 18:11:06 (permalink)
Hi Simon
the part No is 996 572 903 03 but Porsche will want £450+vat. 
You should be able to get one of ebay for £50/60
or look here give them a call as it states out of stock https://www.euspares.co.uk/parts-catalog/blower-parts-10449/porsche/911/911-996/8696-3-4-carrera
You could also phone 9-Apart on 01706 824053  or try https://www.douglasvalley.co.uk/prestige-parts/porsche-boxster-heater-blower-motor-fan-mk1-1997-+-+-1999-year/
good luck
Andy

Andy.
996 Register Secretary.
996@porscheclubgb.com
07775 138527
blease
PCGB Member
  • Total Posts : 386
  • Joined: 2000/07/13 15:20:00
  • Status: offline
blease PCGB Member
Re: Noisy internal ventilation/heater motor/fan 2021/06/11 19:37:29 (permalink)
Cheers Andy. EU spares currently out of stock. Will try clearing the pollen filter and pulling the fan out for inspection. It looks very straightforward....then will give Douglas Valley a go.
Cheers chaps!


996 C2 Cabriolet
Previous cars - '84 3.2 Carrera, 944 S2 Track Toy and '85 930 Turbo.
Sp1ke
PCGB Member
  • Total Posts : 9
  • Joined: 2019/06/21 13:31:41
  • Status: offline
Sp1ke PCGB Member
Re: Noisy internal ventilation/heater motor/fan 2021/06/11 22:13:22 (permalink)
It is worth checking for debris before you you replace it. Try adjusting the HVAC settings to see if increasing fan speed influences the noise.
It's quite straight forward to remove, but you need to remove the glove box to get access to it. You can find some steps here:
https://www.pelicanparts.com/techarticles/Porsche-996-997-Carrera/103-ELEC-HVAC_Motor/103-ELEC-HVAC_Motor.htm
 
I had a similar issue a few years ago & found some insulation material had peeled away from the flap above the HVAC motor & below the pollen filter. Removing the debris fixed the issue.
post edited by Sp1ke - 2021/06/11 22:17:51
75pno
PCGB Member
  • Total Posts : 139
  • Joined: 1997/04/01 00:00:00
  • Status: offline
75pno PCGB Member
Re: Noisy internal ventilation/heater motor/fan 2021/06/11 22:18:32 (permalink)
My fan went noisy and then quit a couple of years ago , I got a replacement from Euro Car parts , it was the same make as the original , the only difference was the connection for the loom ( different plug) this came from the OPC , I brought 2 just in case , delivered for just under a £10.00 , easy fit , you just have to get up personal with the passenger footwell ! My car is a 99my.
 
75pno
wibble
PCGB Member
  • Total Posts : 801
  • Joined: 2006/12/29 22:49:29
  • Status: offline
wibble PCGB Member
Re: Noisy internal ventilation/heater motor/fan 2021/06/27 13:02:21 (permalink)
Mine went noisy last year until it stopped completely.
The fan housing can be dropped passenger side - only two screws hold it in place. You may need to take a third out to pull lower dash for space and all has to be done on your back.
I expect you can get the fan working just by using WD40 on the bearing.  Mine is working fine now.  Note the fan is similar to VW/Seat/Skoda part.

Tony
1999 996 Carrera 4 - Ocean Blue
Past:
1990 944 Turbo - Guards Red
Jump to:

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

© 2021 APG vNext Commercial Version 4.6