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Registered
Join Date: Jul 2004
Location: Minnesota
Posts: 330
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1987 911 Always blows hot air in cabin
I recently bought a 87 911 Targa and no matter where I put the ventilation controls it blows hot air all the time. I can't drive without the windows open or the top off because it gets so hot in the car. There wasn't an owners manual so I'm not sure if theres a problem or operator error. Any Also where would I get an owners manual?
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07-08-2004, 05:53 AM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,500
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First off, the search button is your friend. Learn to use it. Now assuming your controls work, look between the seats you will find one of these configurations: one or two red levers and/or a console with a knob on top. If you have levers, push them down to cut off heat to the cabin. If you have the knob. Turn it to zero. If neither of those work, jack up the rear of the car, place it on jackstands and check to see if the flapper boxes open and close.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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07-08-2004, 06:07 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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The ventilation system is for fresh air only, so it will at best blow air at the existing ambient temp. Only air conditioning will give you cooled air.
If the heater flappers are working correctly, per KurtV's test, then that's as cool as it will be without AC. Welcome and good luck. Paul
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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07-08-2004, 06:16 AM
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Join Date: Apr 2002
Posts: 30,589
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Quote:
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07-08-2004, 06:33 AM
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Location: LaGrange, NY
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mine are stuck now.... hot huh?
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Looking for 87-89 Silver Cab 911, black interior, must be low miles, near pristine, no accidents, well sorted. |
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07-08-2004, 06:34 AM
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Irrationally exuberant
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If you have auto climate control, the linkage from the servo can pop off. With auto climate you won't have two red control levers between the seats.
-Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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07-08-2004, 06:37 AM
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Location: Minnesota
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I must have the auto flapper control because I do not any red manual levers between the seats. Is there anything special to finding and fixing the flappers?
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07-08-2004, 08:40 AM
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Quote:
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Modes of Transportation: 1984 Porsche 911 Targa 2003 VW Jetta GLI |
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07-08-2004, 08:42 AM
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Detached Member
Join Date: May 2003
Location: southern California
Posts: 26,964
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You can buy an owners manual, a very good quality reprint from Pelican here http://www.pelicanparts.com/catalog/shopcart/911M/POR_911M_documt_pg2.htm
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Hugh |
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07-08-2004, 09:26 AM
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Location: Minnesota
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Flappers open and close just fine. I found them just inside the rear wheel wells, they were open and a little rusty, I lubed them up and confirmed they open and close like champs when I adjust the dial.
No matter where the flappers are the temperature of the air coming out of the vents is hot as Haitii. Any other ideas? I sure hope this isn't as good as it gets?
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1987 911 Coupe-Current ride 2007 997TT-Sold 2006 997 C2S-Sold 1991 964 Turbo-Sold 1987 911 Targa-You never forget your first |
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07-08-2004, 08:32 PM
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Irrationally exuberant
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A search turn up this thread among others: Auto heat troubleshooting
Try a search using "heat servo" or "auto heat" as the search string. -Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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07-08-2004, 08:47 PM
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Join Date: Sep 2000
Location: Sunapee, NH
Posts: 1,109
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Couldnt resist...
maybe its a loose nut between the steering wheel and the seat, always talking alot of hot air, probably holding a cell phone while driving...
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Damon @ SERIES 900.com Sunapee NH several 911 variants |
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07-09-2004, 02:36 AM
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Location: LaGrange, NY
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I wired mine shut last night ..... for the summer. Worked great and no more hot legs!
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Looking for 87-89 Silver Cab 911, black interior, must be low miles, near pristine, no accidents, well sorted. |
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07-09-2004, 04:56 AM
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Join Date: Nov 2001
Location: a few miles east of USA
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the air is controlled using the flapper box and fans - one in the engine compartment and one in each footwell.
so i guess if the flapper box is working it may be the fans? are they on all the time? does the flapper box shut off the air (i can't remember)? seems the obvious place.
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Rich  '86 coupe "there you are" Last edited by dickster; 07-09-2004 at 05:21 AM.. |
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07-09-2004, 05:18 AM
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Location: Minnesota
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When I turn the heater control into the red the flappers close?
(They no longer take in fresh air) Is this correct? A fan in the engine compartment and a fan under the dash comes on and the heat is rolling in. When I turn down the heater control the flappers slowly close and the fans turn off. Everything appears to be working besides it always heating.
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1987 911 Coupe-Current ride 2007 997TT-Sold 2006 997 C2S-Sold 1991 964 Turbo-Sold 1987 911 Targa-You never forget your first |
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07-09-2004, 05:44 AM
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Location: LaGrange, NY
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I will bet you the flapper is open a hair. Mine moved 1/16 when I was convincing it..... and it made all the difference!
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Looking for 87-89 Silver Cab 911, black interior, must be low miles, near pristine, no accidents, well sorted. |
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07-09-2004, 05:50 AM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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I don't have the automatic system in my car, but I've noticed that the Bentley manual has some adjustment procedures for setting the controls.
Paul
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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07-09-2004, 05:57 AM
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Location: a few miles east of USA
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the air must still be getting past the flapper boxes.
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Rich '86 coupe "there you are" |
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07-09-2004, 06:12 AM
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As rich says, air must be still getting by. Although the boxes appear open, there is actually a 'flap' inside the box that must close to stop the flow of hot air. Perhaps these are not sealing. Once the vents on the flappers are open, gently turn them a little further by hand and see if that helps. A slight adjustment might be needed to get them to go further and seal.
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2009 997.2 C2S |
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07-09-2004, 07:04 AM
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clayton - i thought there must be a flap inside - thats where i would look.
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Rich '86 coupe "there you are" |
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07-09-2004, 07:17 AM
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The Blue Pheonix
1984 Porsche 911 Carrera Targa 3.2 L
1979 Porsche 930 3.3L
