Factory or dealer added

Area for stock and aftermarket air conditioning.
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Horsman
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Factory or dealer added

Post by Horsman » Tue Jan 11, 2022 5:33 pm

Hate to ask a dumb question but how would I determine if my A/C system is factory or dealer added on a 79 Wagoneer?

Thanks in advance!
Jeff Horsman
1979 Jeep Wagoneer


sonoraed
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Re: Factory or dealer added

Post by sonoraed » Tue Jan 11, 2022 5:38 pm

Far as I know ac for fsj’s we’re all American Air kits, did a few when they were new!


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Last edited by sonoraed on Wed Jan 12, 2022 8:26 am, edited 1 time in total.


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Horsman
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Re: Factory or dealer added

Post by Horsman » Tue Jan 11, 2022 5:59 pm

sonoraed wrote:
Tue Jan 11, 2022 5:38 pm
Far as I know ac for fsj’s we’re all American Air kits, did a few when they new!


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Looking up parts for the A/C system from multiple vendors and it notes factory or dealer added on some parts for the 1979 year model.
Jeff Horsman
1979 Jeep Wagoneer

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Stuka
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Re: Factory or dealer added

Post by Stuka » Wed Jan 12, 2022 7:18 am

Horsman wrote:
Tue Jan 11, 2022 5:59 pm
sonoraed wrote:
Tue Jan 11, 2022 5:38 pm
Far as I know ac for fsj’s we’re all American Air kits, did a few when they new!


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Looking up parts for the A/C system from multiple vendors and it notes factory or dealer added on some parts for the 1979 year model.
The American Air kits could be installed at the factory, or by the dealer. It was the same underdash kit regardless. Its possible some other company made a system for FSJs, though I have not personally seen one.
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Re: Factory or dealer added

Post by sonoraed » Wed Jan 12, 2022 8:22 am

sonoraed wrote:
Tue Jan 11, 2022 5:38 pm
Far as I know ac for fsj’s we’re all American Air kits, did a few when they new!


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After thinking about it for a while newer FSJ's with the integrated control panel probably were factory, although still separate heater box and underdash ac evaporator, Jeep designed the panel to control both, it was cleaver and mickey mouse at the same time.

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Re: Factory or dealer added

Post by ghcoe » Wed Jan 12, 2022 6:42 pm

Here is how I figured it out. Look at the expansion valve.
drawing.png
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Re: Factory or dealer added

Post by sonoraed » Tue Jan 18, 2022 8:36 am

The expansion Valve on the top of page is internally equalized valve bottom valve is externally equalized hence the additional copper tube going suction tube, the top valve is called a peanut valve and commonly used on after market evaporators. I personally have never seen anything but the external valve on American air evaps factory or dealer installed.
But, the internal valve can be used if the R12 style service port on the suction tube is capped off, note it is a flare style fitting, but, you can convert to O-Ring style by using a adapter, o-ring is preferred when converting to 134A because they don't leak refrigerant quite as much, also flare type fitting are hard to find.I see them on small GA style aircraft and of course older oem style vehicles.

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