TTownThomas

OK,

I hope I'm not wearing you guys (gals) out. I have another question. When I turn my '85 targa's top climate control lever to the middle(full vent) and the middle lever to the middle(dash vent) I thinK at highway speed I should get some airflow. I get nothing. I can feel plenty of airflow if I turn it to the "dash vent" side. (I can feel plenty of airflow). What is up? is this a common problem? Is there a stuck "flapper" valve?

Chris
'85 Targa
Cary NC

GothingNC

Chris,

The cables might need to be adjusted.

You need to join the SCR group in Apex Saturday mornings for Coffee and a fun Run

WakeZone Coffee around 8ish and we go for a drive around 10

John

ron mcatee

Cables need adjusting to align the baffles in the fresh air plenum.

theiceman

that oroginal post made no sense to me .. says he gets nothing if it is at dash vent and then has air frlow if to changes it to dash vent .. very confusing ..

gerlando

Can you get fresh air to the center vents on the dash? My Bentley manual states those are for A/C only and I've never been able to get fresh air to come out of them.

theiceman

that is my thinking also .... i think it is working as designed ... time for Ians pic again but i can never find the pic ..

MrScott

Correct. Unless your car came factory with no A/C no fresh air will come through the center vents. Not sure if this goes against etiquette but I posted a 'how to' on pelican if your A/C is now removed: http://forums.pelicanparts.com/porsc...ter-vents.html

rusnak

Here's one of Ian's superb diagrams. Look for post #9 https://rennlist.com/forums/911-foru...l?highlight=ac

rusnak

And another superb illustrated picture from Ian:

What you are seeing is that fresh (un-heated or cooled outside air) only enters via the demisting vents at the windshield, or the side window demisting vents. There is also some passive ventilation that enters and exits via the fresh air vents when the car is moving. This is supposed to offer draft-free air ventilation.

RL911

I've printed this out and put it in my glove box...I can never remember the proper settings...thanks!! Owner's manual doesn't even talk about the "Autoheat Controller." Took me a while to figure out why fresh air never came through the center vents...it's not supposed to.

Marlon Targa 86

That diagram is wunderbar. Got a print out in the glove box as well.

gerlando

While we're on the subject. I have manual heat & the only time it blows is when one of the levers is up. Is the center dial supposed to trigger a blower as well? So if both levers are down and the dial is greater than one, should I be getting heat blowing into the cabin? I've had my car since June and still trying to figure out the HVAC!

GothingNC

The top lever when moved to the right should activate the fan behind the dash board.

End result is a lot of noise and a little bit of air movement;-)

John

theiceman

Porsche HVAC is Hitlers revenge for world war 2 .....

theiceman

I guess we could turn this into the ultimate 911 HVAC thread with everyone pitching in information.

here is what I have