Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,250
I can't imagine the footwell blowers are supposed to run on low all the time, but the electrical systems in these cars are kinda ___ so who knows.

There's a goofy little autoheat thermostat fan mounted to the back of the ashtray too.
Old 04-27-2009, 08:35 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
Wayah Road Warrior
 
Shadetree930's Avatar
 
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,556
Quote:
Originally Posted by mark houghton View Post
Now that you mention it, I do notice (hear) with the engine off and key on...a very soft low fan sound up front. I guess that's the heater fans running in slo-mo. Must be designed to always run for ventilation purposes, I suppose. But are they supposed to ramp-up in response to the thermostat knob setting? If so, I've never been able to hear any change (of course, hard to hear with the car running).
You are probably hearing the fan on the temp sensor mounted in the dash. Next time you are in the car, turn on the key. You should hear that temp sensor fan turning.
__________________
02 996tt White
87 930 GP White (Sold)
87 911 Targa Guards Red(Sold)

Last edited by Shadetree930; 04-27-2009 at 04:45 PM..
Old 04-27-2009, 09:14 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #22 (permalink)
Registered User
 
trevs911's Avatar
 
Join Date: Mar 2009
Location: Lake Conroe TX. Willis
Posts: 59
Garage
I have 3 911s in my 84 the blower motor went out 2 month ago,have a 88 930 Turbo that is apart at this time, check to see if fan on motor is moving I have found that the fan will move up and contact the lower part of the motor housing and melt the plastic. I pulled the fan down off the housing and the motor worked. Brunt the 84 motor if any one can tell me where to get a new motor
Old 05-03-2009, 09:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #23 (permalink)
Wayah Road Warrior
 
Shadetree930's Avatar
 
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,556
Quote:
Originally Posted by Chuck Jones View Post
Hmmmm.....I think I'll wait to see who else chimes in and verify that these are supposed to run like this all the time....what downside is there to shutting them off if you have no need for ventilation....like say the top is down? Is this some sort of safety procedure to keep air flowing thru the car in the unlikely event of an exhaust leak into the cabin? Maybe another of the US requirements like the smog equipment?
FYI ....

Dumping the footwell blowers?
__________________
02 996tt White
87 930 GP White (Sold)
87 911 Targa Guards Red(Sold)
Old 05-05-2009, 10:48 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #24 (permalink)
Registered User
 
magic930's Avatar
 
Join Date: Apr 2003
Location: Carnation, WA
Posts: 623
My footwell blowers run on very low all the time... problem is the only time they increase in speed is after I turn the knob between the seats... while the electric motor runs that closes the exchanger vents the fans speed up, then stop as soon as the electric motor stops!
I will probably just install a three position switch so I can control them manually.

On another note I got great results by adjusting the wires that open the exchanger vents. these vents should be all the way closed when on defrost at the center knob. Mine were still open quite a bit. After adjusting the wires, the heat and defrost in the car actually worked quite well.
__________________
David
Old 05-19-2009, 07:21 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #25 (permalink)
Wayah Road Warrior
 
Shadetree930's Avatar
 
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,556
Update .....

I had the car in for a pre TurboPalooza track day inspection.

While the car was up in the air for wheel balancing I took the opportunity to sneak underneath and look at my "damper vents" coming off the heat exchangers just before the heat plumbing goes into the body.

I had turned the autoheat switch to defrost so the dampers should have been fully closed. They were not! Both were wide open. Ah ... some indication of my problem. I know that the footwell blowers will not come on if these dampers are open (to prevent a blast of cold air on startup) therefore my problem may not be an electrical circuit per-se.

In order to solve the problem, I must figure out why the damper vents are not closing.

Since I can hear the servo running when the switch is turned, I know the servo is good. I pulled the passenger seat and opened the access panel to the console to verify this was true ... it was. The servo was functioning as designed. But ... I could see that the rod operated by the servo had detached at the rear ball joint connection. Closer inspection revealed that the tiny clasp that locks the rod onto the ball had broken thus allowing the rod to slip off. It seems (after knowing the search string) this is a common failure.

.... Damper vents open ... no hot air to the temp sensor ... footwell blowers are not going to come on .... nope .. not gonna happen ...

So ..... new ball joint caps are on order. I will replace them, and then see if this solves the footwell blower issue.

Maybe a pictoral how-to for this repair is in order? We will see how my temperment is when I start the replacement.
__________________
02 996tt White
87 930 GP White (Sold)
87 911 Targa Guards Red(Sold)

Last edited by Shadetree930; 06-09-2009 at 12:22 PM..
Old 06-09-2009, 11:28 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #26 (permalink)
 
Registered User
 
Join Date: Feb 2008
Location: Marietta GA
Posts: 2,544
Did you ever get this sorted out? I found this link that I thought was helpful.

http://members.rennlist.com/imcarthur/911autoheat.htm

__________________
1987 GP White 930
1977 Ford Bronco

Last edited by willtel; 08-12-2009 at 11:36 AM..
Old 08-12-2009, 11:33 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #27 (permalink)
Registered User
 
Join Date: Oct 2007
Location: Idaho
Posts: 193
I know this thread is old but does anyone have a picture of the footwell blowers and how to access them? I have a '79 so it might be somewhat different than the later models. I do have the automatic control between the seats and I get heat in both footwells but the drivers side air flow is much greater than the passenger so I would like to check the blower on that side.

I adjusted the fresh air control to close off the fresh air on the passenger side better since there was a lot of cold air coming in there.
Old 11-21-2009, 03:02 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #28 (permalink)
Wayah Road Warrior
 
Shadetree930's Avatar
 
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,556
Have not got the footwell blowers going yet. Summer came and I put it off since it needs to be cold enough for the autoheat sensors to work (and diagnose).

I did get the servo ball joint caps replaced and I am getting heat into the cabin. Enough to melt your skin when in the 8 - 10 positions. But I am a perfectionist and will get back into this project before much longer.
__________________
02 996tt White
87 930 GP White (Sold)
87 911 Targa Guards Red(Sold)
Old 11-21-2009, 04:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #29 (permalink)
Registered User
 
Join Date: Mar 2008
Location: Fairhaven Ma.
Posts: 186
hi i have and 86 930 i just fixed my footwell blowers a micro switch on the autoheat unit was bad went to raido shack and 1.85 later i have heat
Old 11-21-2009, 04:21 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #30 (permalink)
Wayah Road Warrior
 
Shadetree930's Avatar
 
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,556
Pictures or additional info please!
__________________
02 996tt White
87 930 GP White (Sold)
87 911 Targa Guards Red(Sold)
Old 11-21-2009, 05:24 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #31 (permalink)
Registered User
 
Join Date: Mar 2008
Location: Fairhaven Ma.
Posts: 186
inside the auto heat controller there are two micro switch's on the right side the on the outermost is the one jump the wires and you can see if it is bad
Old 11-21-2009, 05:42 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #32 (permalink)
Wayah Road Warrior
 
Shadetree930's Avatar
 
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,556
A straight jump? What other conditions have to be in place for the jump test to be valid? For example ... heater switch on and in position x ... and so on.
__________________
02 996tt White
87 930 GP White (Sold)
87 911 Targa Guards Red(Sold)
Old 11-21-2009, 05:52 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #33 (permalink)
Wayah Road Warrior
 
Shadetree930's Avatar
 
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,556
Can you circle the micro switch for me please?



Thanks!
__________________
02 996tt White
87 930 GP White (Sold)
87 911 Targa Guards Red(Sold)
Old 11-21-2009, 06:17 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #34 (permalink)
Registered User
 
Join Date: Mar 2008
Location: Fairhaven Ma.
Posts: 186
hi its the one on the outside there are two side by side red wire heater must be on
Old 11-22-2009, 03:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #35 (permalink)
Registered User
 
pete3799's Avatar
 
Join Date: Nov 2008
Location: Vermont
Posts: 6,331
Garage
Quote:
Originally Posted by forwheeler View Post
I know this thread is old but does anyone have a picture of the footwell blowers and how to access them? I have a '79 so it might be somewhat different than the later models. I do have the automatic control between the seats and I get heat in both footwells but the drivers side air flow is much greater than the passenger so I would like to check the blower on that side.

I adjusted the fresh air control to close off the fresh air on the passenger side better since there was a lot of cold air coming in there.
My 79 dosn't have footwell blowers.
__________________
Pete
79 911SC RoW
"Tornadoes come out of frikkin nowhere. One minute everything is all sunshine and puppies the next thing you know you've got flying cows".- Stomachmonkey
Old 11-22-2009, 04:35 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #36 (permalink)
Registered User
 
mark houghton's Avatar
 
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,760
Incredibly complex piece of s_ _t engineering, with too may gizzmo parts to go wrong. This issue with my car will sit on the back burner as another winter project.
__________________
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 11-22-2009, 06:51 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #37 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,250
Couldn't agree with you more... the one in my car works because previous owner replaced it with a new one. When i lifted it up and looked inside I couldn't believe all the crap in there.
I'd rather have the lever you pull up for heat, a fan speed switch on the dash where the auto heat air intake vent is and hand throttle for cold starts like the older cars.
Old 11-22-2009, 07:08 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #38 (permalink)
Wayah Road Warrior
 
Shadetree930's Avatar
 
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,556
Quote:
Originally Posted by motorracer View Post
hi its the one on the outside there are two side by side red wire heater must be on
Thanks. I thought that was the area in question. My understanding is that I can open this baby up again, oull one swithc and take it to Radio Shack for an exact replacement?

I plan on doing that. Any advantage to replacing the other micro-switch 'while I am in there'? any idea what function it performs?
__________________
02 996tt White
87 930 GP White (Sold)
87 911 Targa Guards Red(Sold)
Old 11-22-2009, 08:37 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #39 (permalink)
Registered User
 
Join Date: Jul 2006
Location: S. Florida
Posts: 7,250
If you have a real electronics supply store in your area go there first and forget about the limited selection of consumer grade crap radio shack carries.

Around here the professional electronics stores have gone out of business though so radio shack may be the only walk in option.

I've always been able to find quality electrical parts here:
Mouser Electronics - Electronic Component Distributor
Old 11-22-2009, 09:18 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #40 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 01:17 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.