72 air cond not working
Thread Starter
Racer
Joined: Mar 2016
Posts: 470
Likes: 31
From: Melbourne Victoria
72 air cond not working
Hi all,
Took my 72 Vette to an air cond guy yesterday to get it re-gassed and was hoping to get the air cond working. After re-gassing, the pipe coming off the compressor was going extremely cold, however nothing else went cold. Don't think this air cond has worked for a very long time. Car came from Chicago to Australia in 2014 where it spent 33 years of it's life.
The air cond guy seems to think its either the TX valve or the POA valve that is stuffed, or maybe both.
Is there anything I can do to eliminate which one might be the problem?
And could someone point me in the right direction to buy these parts, preferrably with original part numbers on them as the car is all matching numbers?
Cheers
Took my 72 Vette to an air cond guy yesterday to get it re-gassed and was hoping to get the air cond working. After re-gassing, the pipe coming off the compressor was going extremely cold, however nothing else went cold. Don't think this air cond has worked for a very long time. Car came from Chicago to Australia in 2014 where it spent 33 years of it's life.
The air cond guy seems to think its either the TX valve or the POA valve that is stuffed, or maybe both.
Is there anything I can do to eliminate which one might be the problem?
And could someone point me in the right direction to buy these parts, preferrably with original part numbers on them as the car is all matching numbers?
Cheers
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,853
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Sounds like the system is freezing up... On your car a POA upgrade might be a better choice. I don't carry it but Old air makes a POA upgrade that should do you good.
R12 http://www.oldairproducts.com/catalo...it-p-3672.html
134a http://www.oldairproducts.com/catalo...it-p-3674.html
We don't sell enough of their stuff to offer you a discount I'm sorry but you might contact them with your question, they are a top shelf company to deal with. Maybe I'll catch you the next time..
Willcox
R12 http://www.oldairproducts.com/catalo...it-p-3672.html
134a http://www.oldairproducts.com/catalo...it-p-3674.html
We don't sell enough of their stuff to offer you a discount I'm sorry but you might contact them with your question, they are a top shelf company to deal with. Maybe I'll catch you the next time..
Willcox
Last edited by Willcox Corvette; Sep 20, 2016 at 10:42 PM.
Thread Starter
Racer
Joined: Mar 2016
Posts: 470
Likes: 31
From: Melbourne Victoria
Sounds like the system is freezing up... On your car a POA upgrade might be a better choice. I don't carry it but Old air makes a POA upgrade that should do you good.
R12 http://www.oldairproducts.com/catalo...it-p-3672.html
134a http://www.oldairproducts.com/catalo...it-p-3674.html
We don't sell enough of their stuff to offer you a discount I'm sorry but you might contact them with your question, they are a top shelf company to deal with. Maybe I'll catch you the next time..
Willcox
R12 http://www.oldairproducts.com/catalo...it-p-3672.html
134a http://www.oldairproducts.com/catalo...it-p-3674.html
We don't sell enough of their stuff to offer you a discount I'm sorry but you might contact them with your question, they are a top shelf company to deal with. Maybe I'll catch you the next time..
Willcox
Like I said I'd like to keep the car original as possible. Another option might be to get the original POA valve rebuilt as it might be a lot cheaper than a NOS or rebuilt one from the States.
Would love to know how I can eliminate whether the TX or POA valve is the problem so I can order the TX valve from the States if indeed that is the issue?
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Your "A/C guy" should know. If he doesn't, find a new "A/C guy".
P.S. It could be that he just overfilled the system. Did he actually hook up any gauges to your system so he could read line pressures?
P.S. It could be that he just overfilled the system. Did he actually hook up any gauges to your system so he could read line pressures?
Last edited by 7T1vette; Sep 22, 2016 at 01:26 AM.
Thread Starter
Racer
Joined: Mar 2016
Posts: 470
Likes: 31
From: Melbourne Victoria
This AC system hasn't worked in years nor been re-gassed in a very long time.
When he re-gassed it he did have gauges so he could monitor it. I just preferred to get some help here if I could as to hopefully find whether it was the TX or POA valve. Then I could order the parts from the U.S which would take a week to get here before I take the car back to him.
I emailed Old Air but still waiting to here back from them.
Last edited by Corvetteoz; Sep 22, 2016 at 02:57 AM.
Thread Starter
Racer
Joined: Mar 2016
Posts: 470
Likes: 31
From: Melbourne Victoria
BTW how much R134 gas should be put into my AC when re-gassing it?
Found a very useful web page which answers a lot of questions regarding the AC system including how much R134 to add.
http://www.corvette-restoration.com/...conversion.htm
Found a very useful web page which answers a lot of questions regarding the AC system including how much R134 to add.
http://www.corvette-restoration.com/...conversion.htm
Last edited by Corvetteoz; Sep 22, 2016 at 11:30 PM.
Thread Starter
Racer
Joined: Mar 2016
Posts: 470
Likes: 31
From: Melbourne Victoria
Just wanted to let you guys know. After I got my air cond guy to do his work my air cond is all fixed. He removed the POA valve and put in a new TX valve. Regassed the system again and now the air cond works perfectly. Very happy customer.
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Thread Starter
Racer
Joined: Mar 2016
Posts: 470
Likes: 31
From: Melbourne Victoria
I blew an air cond hose yesterday lol. Looking at the hose it was an extremely old hose so will have to be replaced and re gassed as well. If there was too much gas installed, would that cause something like this?