Air Vent System

nnunez · 02-08-2007, 11:36 AM

1996 Silverado 1500....

I wonder if others have the same dilemma.......

When I have my windows down and the recycle button (on or) off, hot air comes in through the vents at the floorboard. As soon as I close my windows, the hot air stops.

It is hot enough in Houston and I sure would like to cut off that hot air flow.

Any similarities with anyone out there in carrolandia?

bradrhale · 02-10-2007, 08:14 PM

if you dont want hot air, i am assuming that you want cool air. but you have your windows down. ???? im confused. what is your controls set on when it does this??

nnunez · 02-12-2007, 11:31 AM

Air console is set at:
Temp is set on cold....
Recycle button is off....
Fan speed is off.....
Front vent selected....

No matter what settings I have, I get hot air through the floor vent when I open my windows.
The hot air stops as soon as I close my windows.
I'd like to stop the hot air (or any air) from coming into the cab......

bradrhale · 02-12-2007, 12:37 PM

your vehicle is causing a suction. with air passing over the vehicle, it is creating a vacuum inside the cab. when you have a higher pressure at the front of your fresh air box and negative pressure in the cab, it is going to flow from there. you might also want to make sure that your heater control valve is not open and venting over the coils.

02-08-2007, 11:36 AM	#1
nnunez Senior Member Join Date: Dec 2005 Posts: 307	Air Vent System 1996 Silverado 1500.... I wonder if others have the same dilemma....... When I have my windows down and the recycle button (on or) off, hot air comes in through the vents at the floorboard. As soon as I close my windows, the hot air stops. It is hot enough in Houston and I sure would like to cut off that hot air flow. Any similarities with anyone out there in carrolandia?

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02-10-2007, 08:14 PM	#2
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	if you dont want hot air, i am assuming that you want cool air. but you have your windows down. ???? im confused. what is your controls set on when it does this??

02-12-2007, 11:31 AM	#3
nnunez Senior Member Join Date: Dec 2005 Posts: 307	Air console is set at: Temp is set on cold.... Recycle button is off.... Fan speed is off..... Front vent selected.... No matter what settings I have, I get hot air through the floor vent when I open my windows. The hot air stops as soon as I close my windows. I'd like to stop the hot air (or any air) from coming into the cab......

02-12-2007, 12:37 PM	#4
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 8,025	your vehicle is causing a suction. with air passing over the vehicle, it is creating a vacuum inside the cab. when you have a higher pressure at the front of your fresh air box and negative pressure in the cab, it is going to flow from there. you might also want to make sure that your heater control valve is not open and venting over the coils.