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Location: Portland, OR
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1989 964 front fan squealing

I think I found the fans, but I'd like to double check before I order them and start taking stuff apart. It sounds like it's right in the middle of the dash, though I'm fairly sure the fans are on either side. It/they make(s) an awful squeal/bearing rubbing sound.

I've been looking through our hosts parts catalogue and DIY. I think this is the article for replacing them.

http://www.pelicanparts.com/techarticles/Porsche-993/59-ELEC-Front_Blower_Motors_Replacement/59-ELEC-Front_Blower_Motors_Replacement.htm

and I think these are the two fans

http://www.pelicanparts.com/catalog/SuperCat/0832/POR_0832_VENTAC_pg3.htm#item13

Front Left Fan: Part #: 964-572-015-01
Front Right Fan: Part #: 964-572-016-01

While I have the assembly apart I was planning on replacing both...
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Steve
'66 912 - Polo Red;
'74 911s - Silver Carrera RS clone
'77 911s - Peru red IROC Clone
'89 964 C4 - Guards red

Last edited by dfhtrhjn; 12-12-2017 at 07:24 AM..
Old 12-12-2017, 07:21 AM
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Could it be your CCU fan?
Old 12-12-2017, 09:19 AM
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Dmitry at Pelican Parts's Avatar
 
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Quote:
Originally Posted by dfhtrhjn View Post
I think I found the fans, but I'd like to double check before I order them and start taking stuff apart. It sounds like it's right in the middle of the dash, though I'm fairly sure the fans are on either side. It/they make(s) an awful squeal/bearing rubbing sound.

I've been looking through our hosts parts catalogue and DIY. I think this is the article for replacing them.

Pelican Technical Article - Porsche 993 - Front Blower Motors Replacement

and I think these are the two fans

1989 Porsche 911 Carrera 4 Coupe - Air Conditioning & Vents - Page 3

Front Left Fan: Part #: 964-572-015-01
Front Right Fan: Part #: 964-572-016-01

While I have the assembly apart I was planning on replacing both...


Hi Steve - please feel free to give us a call at 888-280-7799 and one of our Porsche part specialists will be happy to help you out and confirm that those parts are what you'd need.
Old 12-12-2017, 10:30 AM
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I second the CCU fan.
Small but annoying noise that emanates from the dash.
Old 12-14-2017, 03:52 AM
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Also agree with the others on the CCU fan. If it is one of (or both) of the fans for ventilation the noise should be more apparent when you open the hood and listen from the trunk.
Old 12-19-2017, 01:01 PM
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You can unplug the connector to the CCU fan to see if the noise goes away.

See the photo for the connector location: It's the two pin white connector.

https://www.bergvillfx.com/ccurepair

https://rennlist.com/forums/964-forum/211198-how-to-fix-a-squeaky-ccu-fan.html

If it is your CCU fan, you can buy a new one for $300 or do what I did, per the recommendation of one of our resourceful members: Buy a used one from a Mercedes for about $50, and swap the bracket, housing and connector to match the 964 design.

Here is the part number from the Mercedes: 2000 2001 Mercedes-Benz ML320 Temperature AC heater climate control 173000-0841.

There are a few threads on the matter. Good luck.
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1989 Carrera 4 Coupe - Guards Red
Old 12-23-2017, 07:08 AM
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If it is the CCU fan, it's a 20-minute job to remove, clean/lube, and reinstall. Did the trick for me.
Old 12-23-2017, 01:10 PM
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If the noise is only present when the fans are switched on, it's the fans.
If it's present otherwise, it's the CCU fan?
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Bob
group911@aol.com
Old 01-01-2018, 07:32 AM
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