New 134 POA Vave - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Harley03joe · 07-10-2016, 04:51 AM

I Just Got My New POA Valve 134 From Classic.
AFter I Evacuate And Pump Down The System, Question Where Do I Hook Up The Wires The Instuction Are Not Real Clear.

The Instructions >>>Replacement for the original POA Valve. Converts the POA System to a Cycling Clutch System like found on most Late Model Vehicles. Saves Gas Milage and decreases length of load on the engine. Easy to install and is compatable with R134 refrigerants.

And What Should My Gages Read When Full >>> Low 130 >> Hight 230 ?
Also Has And One Used The 134 New POA Valve ?
Thank You For Any Help In This Matter
Harley03joe

davepl · 07-10-2016, 01:31 PM

I know very little about AC and POA valves, but ours does not have an electrical connection, it is varied mechanically by a thermal probe. So I'm not sure if that's a trinary switch for fan control or what that is on your POA.

Are you quite confident that the piece you have is compatible with our trucks?

ls1nova71 · 07-10-2016, 06:14 PM

Its a low pressure cut out switch, it wires in line of the clutch wire so it can cycle the compressor on and off. It relys on the expansion valve to regulate the system. I tried one of those once and didn't have very good luck with it. When converting an old system to R134a, fixed orifice systems seem to work the better in my opinion.

ss454conv · 07-10-2016, 10:14 PM

Do yourself a favor and return that part. Had one in my Chevelle and hated it. It would cycle on and off and when it goes off it is instantly hot.
An original POA valve can be adjusted for 134. Do a search and you find out how to do it. That modification worked much better then part you have and it is free if you have your original POA. It also looks stock because it is the original part.

Harley03joe · 07-15-2016, 04:43 PM

Quote:

Originally Posted by ss454conv

Do yourself a favor and return that part. Had one in my Chevelle and hated it. It would cycle on and off and when it goes off it is instantly hot.
An original POA valve can be adjusted for 134. Do a search and you find out how to do it. That modification worked much better then part you have and it is free if you have your original POA. It also looks stock because it is the original part.

I Did Return It & Im Staying With The Org POA Valve.
Looks Like Its Working Fine With The 134 In It , Its Cold, In South Florida I Blocked Off The Heater
Thank You "ALL" For Your Input
Thanks
Harley03joe

07-10-2016, 04:51 AM	#1
Harley03joe Registered User Join Date: Apr 2016 Location: Miramar Florida Posts: 153	New 134 POA Vave I Just Got My New POA Valve 134 From Classic. AFter I Evacuate And Pump Down The System, Question Where Do I Hook Up The Wires The Instuction Are Not Real Clear. The Instructions >>>Replacement for the original POA Valve. Converts the POA System to a Cycling Clutch System like found on most Late Model Vehicles. Saves Gas Milage and decreases length of load on the engine. Easy to install and is compatable with R134 refrigerants. And What Should My Gages Read When Full >>> Low 130 >> Hight 230 ? Also Has And One Used The 134 New POA Valve ? Thank You For Any Help In This Matter Harley03joe

07-10-2016, 01:31 PM	#2
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: New 134 POA Vave I know very little about AC and POA valves, but ours does not have an electrical connection, it is varied mechanically by a thermal probe. So I'm not sure if that's a trinary switch for fan control or what that is on your POA. Are you quite confident that the piece you have is compatible with our trucks? __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

07-10-2016, 06:14 PM	#3
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: New 134 POA Vave Its a low pressure cut out switch, it wires in line of the clutch wire so it can cycle the compressor on and off. It relys on the expansion valve to regulate the system. I tried one of those once and didn't have very good luck with it. When converting an old system to R134a, fixed orifice systems seem to work the better in my opinion. __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html

07-10-2016, 10:14 PM	#4
ss454conv Registered User Join Date: Jun 2013 Location: Waterloo IL Posts: 49	Re: New 134 POA Vave Do yourself a favor and return that part. Had one in my Chevelle and hated it. It would cycle on and off and when it goes off it is instantly hot. An original POA valve can be adjusted for 134. Do a search and you find out how to do it. That modification worked much better then part you have and it is free if you have your original POA. It also looks stock because it is the original part.



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