Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> Fan not working, Whre to begin ...
Chupee
post Jul 12 2022, 10:35 PM
Post #1


Newbie
*

Group: Members
Posts: 45
Joined: 18-January 22
From: woodland Hills Ca
Member No.: 26,261
Region Association: Central California
So my 71 1.7 has been in the shop for a few weeks for a few issues. I had asked to get the fan bl.ower working. i was told today after every known attempt they had to call it quits unless I wanted to do some serious removal of parts to try and get to the motor I guess.

Any suggestion on what may have been missed?

thx alot
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
 Reply to this topicStart new topic
Replies(1 - 11)
dhuckabay
post Jul 12 2022, 10:50 PM
Post #2


Member
**

Group: Members
Posts: 222
Joined: 14-June 20
From: Idaho
Member No.: 24,379
Region Association: Pacific Northwest
Will assume you mean the ventilation fan in the dash. If so it is a PIA. You have to remove the fuel tank. Voice of experience now. The stator is readily available. The one I bought was off enough it didn't work. Had to buy the fan assembly minus the housing. The above comment is obviously void if jumping power to the motor gets it working.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Spoke
post Jul 13 2022, 07:16 AM
Post #3


Jerry
*****

Group: Members
Posts: 6,978
Joined: 29-October 04
From: Allentown, PA
Member No.: 3,031
Region Association: None
Chances are the shop didn't try very hard to get to the fan as it's impossible to get access to the fan w/o removing the gas tank.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jrmdir
post Jul 13 2022, 07:34 AM
Post #4


Member
**

Group: Members
Posts: 224
Joined: 13-May 21
From: Central Ohio
Member No.: 25,544
Region Association: Upper MidWest
Very common issue on early cars that do not have a screen in the cowl fresh air intake grille. Leaves and crud eventually block the fan from spinning, motor stalls and, usually, the brushes get so hot the brush holder plastic melts - then it's RIP.

As noted, fuel tank needs to come out. It's not too hard to remove the fresh air box, but a huge pain to get it back in. Google fresh air box removal for articles and videos. I just did this on my car.

Good advice I got from people here was to go with PartsGeek for the replacement. Much less expensive than other sources and it fit perfectly:

https://www.partsgeek.com/gbproducts/DC/170...3AaAmFDEALw_wcB

Good luck.

Ron
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
JmuRiz
post Jul 13 2022, 07:41 AM
Post #5


914 Guru
*****

Group: Members
Posts: 5,426
Joined: 30-December 02
From: NoVA
Member No.: 50
Region Association: MidAtlantic Region
I got mine out w/o taking the gas tank out (shrugs)....then again I have girly sized hands and wrists, haha.

Maybe I just got the cover off to allow me to clean all the old leaves and junk out of it. I think that fried it, I'll have to take everything out at some point. Maybe a good time to get a new reproduction gas tank (IMG:style_emoticons/default/wink.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Steve
post Jul 13 2022, 08:07 AM
Post #6


914 Guru
*****

Group: Members
Posts: 5,585
Joined: 14-June 03
From: Orange County, CA
Member No.: 822
Region Association: Southern California
QUOTE(Chupee @ Jul 12 2022, 09:35 PM) *

So my 71 1.7 has been in the shop for a few weeks for a few issues. I had asked to get the fan bl.ower working. i was told today after every known attempt they had to call it quits unless I wanted to do some serious removal of parts to try and get to the motor I guess.

Any suggestion on what may have been missed?

thx alot

Curious what the shop has tried? I bought a 914 last year and the fan wasn't even plugged in. I would start by seeing if its getting 12v. I would also remove the ashtray and short out the ground wire. Sometimes the copper traces are dirty and not making contact. I have also seen a wire get knocked loose when someone installed a stereo. If you have a spare fan try plugging it in and see if it works.
I would verify the above before going to the hassle of removing the fan.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
emerygt350
post Jul 13 2022, 08:30 AM
Post #7


Advanced Member
****

Group: Members
Posts: 2,096
Joined: 20-July 21
From: Upstate, NY
Member No.: 25,740
Region Association: North East States
yeah, start by cleaning those contacts under the ash tray if you haven't done it already. two minutes. Fixed my fan.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
NARP74
post Jul 13 2022, 08:58 AM
Post #8


Senior Member
***

Group: Members
Posts: 1,064
Joined: 29-July 20
From: Colorado, USA, Earth
Member No.: 24,549
Region Association: Rocky Mountains
I got one working by moving the speed lever back and forth many times, basically cleaning the contacts. My lucky day!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
CCE
post Jul 13 2022, 11:27 AM
Post #9


CCE
**

Group: Members
Posts: 309
Joined: 28-December 21
From: Mexico
Member No.: 26,203
Region Association: NineFourteenerVille
QUOTE(emerygt350 @ Jul 13 2022, 09:30 AM) *

yeah, start by cleaning those contacts under the ash tray if you haven't done it already. two minutes. Fixed my fan.

How? Where can I get some instructions? Will a spray of dielectric “WD40” will work from the ashtray? Or do I need to rub it hard?. From inside of the ashtray.
Thanks
Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DRPHIL914
post Jul 13 2022, 11:57 AM
Post #10


Dr. Phil
*****

Group: Members
Posts: 5,766
Joined: 9-December 09
From: Bluffton, SC
Member No.: 11,106
Region Association: South East States
no grease or WD-40, pull the ashtray and you will see contacts on top of the unit, you can sometimes just use an eraser to clean the metal to allow proper conduction of ground. I found my issues was 2 fold. main issue was the wire harness at the fan under the housing was not put back in place correctly by the previous owner and also the fan bearing and motor were going too. We pulled the tank, took the air box out, replaced the motor/fan assembly inside the box with a new one. there is a thread here on how to do that and Ian Karr has his video of how to put it back in with new seals as well.
Get the seal kits from 914rubber, all the flapper seals and the fan seals will need to be replaced.

User is offlineProfile CardPM
Go to the top of the page
+Quote Post
NARP74
post Jul 13 2022, 12:16 PM
Post #11


Senior Member
***

Group: Members
Posts: 1,064
Joined: 29-July 20
From: Colorado, USA, Earth
Member No.: 24,549
Region Association: Rocky Mountains
Electronic contact cleaner works too for the board contacts.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
windforfun
post Jul 13 2022, 04:29 PM
Post #12


Senior Member
***

Group: Members
Posts: 1,789
Joined: 17-December 07
From: Blackhawk, CA
Member No.: 8,476
Region Association: None
QUOTE(NARP74 @ Jul 13 2022, 11:16 AM) *

Electronic contact cleaner works too for the board contacts.


(IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Switch to: Standard · Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 16th May 2024 - 11:06 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...