How to stop air flow from under the dash

Booney1golf · 10-28-2008, 11:22 AM

Hello everyone. I have an 87 911 TL Cab and I have air coming out from under the dash on my legs, from the Drivers side and also the Passenger side. During the Summer I did not notice it so much but this morning it was cold and I really noticed it.

It does not matter how I move the levers on the dash it still blows air from outside, under the dash, when I am moving. It is not from the A/C or the Heater.

Anything I might be able to do myself to fix this problem.

Thanks for your time in reading and answering my post.

Best regards,
Booney1golf
87 Porsche 911 Turbo Look Cabriolet - Mid life enjoyment

4flyboy · 4flyboy's Garage

We'll need a PHD for this one...........subsrcibed!

Scott

Ron.G · 10-28-2008, 11:37 AM

Could be that your hood seal is letting in air. What kind of shape is it in?
Feel around your radio , light switch etc while driving.

tonythetarga · 10-28-2008, 11:43 AM

could also be that little clip that holds the cable sheath isn't doing its job and the lever can't close off the fresh air.
You will need to remove that cardbiard piece in the trunk below the windshield and watch the cable movement with someone else moving the levers and see if the flaps are closing.

Porsche_monkey · 10-28-2008, 12:05 PM

Quote:

Originally Posted by Ron.G

Could be that your hood seal is letting in air. What kind of shape is it in?
Feel around your radio , light switch etc while driving.

Or your hood is not completely shut. I am not bright enough to discover this problem, but my co-pilot was. Hood was latched by the safety catch but not completely shut.

Booney1golf · 10-28-2008, 12:12 PM

My Hood is completely shut. I think it is something like a valve or something is open and will not close even when I move the levers.

I will take the cardboard piece off on the firewall and have someone move the levers and see what I can see as it was suggested.

I thought about just plugging the holes with something temporarily but I really like doing things right when feasible.

Thanks to all of you for your time and responses.

Without this forum I probably would not be able to keep my car.

Best regards,
Booney1golf
87 Porsche 911 Turbo Look Cabriolet - Mid Life Enjoyment!!

Joe V · 10-28-2008, 12:54 PM

Booney,

My 84 Coupe has the same issue from the left driver's knee area, under the gas gauge.
My hood seal is in great shape, but I'm suspecting that one of the many holes in the trunk area is causing that air leak.
Can anyone confirm?

TIA

rfloz · 10-28-2008, 02:23 PM

Hmmm. With no a/c, I'd pay good money to get some (cool/fresh) air coming in under the dash.

Please post when you find the source.

MarkM911 · 10-28-2008, 03:20 PM

I had a similar problem and found this thread:

Constant Fresh Air

Dan Morton · Dan Morton's Garage

I had the same problem in my 1970. I replaced the hood seal and all was good.

rfloz · 10-28-2008, 06:47 PM

Quote:

Originally Posted by MarkM911

I had a similar problem and found this thread:

Constant Fresh Air

I'm not sure this will solve the OP's problem, but I do think it solves mine. I know my fans are not working, but the levers do nothing either (I get no air circulation at all). The pictures in the referenced thread show the mechanism to open the fresh air vent and I strongly suspect mine is not working. Perhaps the clip or the cable.

Anyway, much thanks and I hope the OP's problem is a s simple.