Quick AC question. Recirc issue
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Instructor
Joined: Aug 2010
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From: Western OK
Quick AC question. Recirc issue
The vacuum door that is located on the right side of the passenger footwell I think is the recirculating door flapper. It does not open all the way and is real slow. Hooked up vacuum gauge to line coming to it and I have about 4-5 lbs of vacuum pull. Hook up my vacuum pump direct to valve and it will open at 8ish lbs and hold a vacuum. So it only opens part way when in recirc mode. It is on a 1972 model,year.
Ok, confirm this for me. If I want full recirculating air all the time I can block open the door. When it is 98+ outside it needs all the help it can get. Is their another door that opens or shuts when it goes into recirc mode?
Done c-4 upgrade and sealed all ducts and it blows cold air, but struggles in really hot weather.
Ok, confirm this for me. If I want full recirculating air all the time I can block open the door. When it is 98+ outside it needs all the help it can get. Is their another door that opens or shuts when it goes into recirc mode?
Done c-4 upgrade and sealed all ducts and it blows cold air, but struggles in really hot weather.
Last edited by SWO vette; Aug 7, 2015 at 09:35 AM. Reason: Add year
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,850
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
The vacuum door that is located on the right side of the passenger footwell I think is the recirculating door flapper. It does not open all the way and is real slow. Hooked up vacuum gauge to line coming to it and I have about 4-5 lbs of vacuum pull. Hook up my vacuum pump direct to valve and it will open at 8ish lbs and hold a vacuum. So it only opens part way when in recirc mode.
Ok, confirm this for me. If I want full recirculating air all the time I can block open the door. When it is 98+ outside it needs all the help it can get. Is their another door that opens or shuts when it goes into recirc mode?
Done c-4 upgrade and sealed all ducts and it blows cold air, but struggles in really hot weather.
Ok, confirm this for me. If I want full recirculating air all the time I can block open the door. When it is 98+ outside it needs all the help it can get. Is their another door that opens or shuts when it goes into recirc mode?
Done c-4 upgrade and sealed all ducts and it blows cold air, but struggles in really hot weather.
You didn't say what year but here is a hose function schematic
Thread Starter
Instructor
Joined: Aug 2010
Posts: 187
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From: Western OK
Sorry, it is a 72
Is the one under the fender easy access? If it is the one I am thinking about it will wait until later! All hoses are good as are the vacuum pots. I tested them when I did the heater core change. It blows cold air, but I guess I am getting greedy!
Is the one under the fender easy access? If it is the one I am thinking about it will wait until later! All hoses are good as are the vacuum pots. I tested them when I did the heater core change. It blows cold air, but I guess I am getting greedy!
Last edited by SWO vette; Aug 7, 2015 at 09:39 AM.
Former Vendor
Joined: Aug 2006
Posts: 76,656
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From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Thread Starter
Instructor
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From: Western OK
I don't have my manual handy. Is your drawing of the vacuum pot that is access by removing the kick panel? I cannot figure out where the other is located. I have looked at my photos of when I did the heater replacement and really don't want to pull the dash again to get the heater core box out.
What am I missing here?
What am I missing here?
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,850
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Nope... the one above is the one under the fender.
Here is the one under the kick panel.... and if I were you I'd check the linkage. They can become corroded and hinder the pods movement.
Here is the one under the kick panel.... and if I were you I'd check the linkage. They can become corroded and hinder the pods movement.
Melting Slicks
Joined: Feb 2007
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From: S.E. MI
St. Jude Donor '15
Thread Starter
Instructor
Joined: Aug 2010
Posts: 187
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From: Western OK
I have no idea about the other one as it was news to me before you told me about it. Suggestions on best way to access it?
On a good note my body mounts and birdcage is dang near perfect!
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Thread Starter
Instructor
Joined: Aug 2010
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From: Western OK
It allows the AC to reuse the air inside the car for a faster cool down. It is easier to cool 80 degree air and keep it cool than cooling 100 degree outside air
Melting Slicks
Joined: Feb 2007
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From: S.E. MI
St. Jude Donor '15
Unless you could block the outside air from getting to the blower through the wiper trough.
Thread Starter
Instructor
Joined: Aug 2010
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From: Western OK
When it cools off I plan to,look at mine and see where this thing is at and test it
Thread Starter
Instructor
Joined: Aug 2010
Posts: 187
Likes: 10
From: Western OK
I don't have my manual handy. Is your drawing of the vacuum pot that is access by removing the kick panel? I cannot figure out where the other is located. I have looked at my photos of when I did the heater replacement and really don't want to pull the dash again to get the heater core box out.
What am I missing here?
What am I missing here?
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,850
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Thread Starter
Instructor
Joined: Aug 2010
Posts: 187
Likes: 10
From: Western OK
Oh my. Looks like a job for someone with little hands. Looks like wiper grill and cover has to come off. First I will try the vacuum pump to see if the pot is good. I,hope it is just stuck shut. Thanks to all
Team Owner
Joined: Jul 1999
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From: Orange Park Florida
Want to do this the easy way?? and leave the body alone?? pull the right front wheel, get a cut off wheel/angle cutter in there are cut out the rear of the tire well, be CAREFUL, then you can pull the blower assy, and then the wiper door/metal grate in front of it.....then find a couple/three? bolts under the fender, remove them and the whole outside air door assy comes out.....the thing is just the opposite in action to the inner/recirc door, the normal setting/ engine off is to outside air is always open....PIA my '72 is a vert, so years ago, I cut the springs and valves on that outside air door, reinstalled it with a heavy coat of RTV, and sealed it SHUT, the inside door behind the kick panel was trashed, so MY A/C is on permanent recirc.....and of course I have a C4 blower also.....nice chilly air....
