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Discussion Starter · #1 ·
Im having problems on warm days where i put the A/c on max and i barely feel it cold, if its a cludy day its really nice, but i think im just missing gas

some people say i need to change the drier and almost everything to get it to r134, and i read others just put alot of oil and charge it with r134

what can i do guys ?

Also how do i know if its r-12 in the system or r-134?
 

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1986 Bronco Eddie Bauer 5.0 bone stock
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Look where the gas goes in, if there are some adapters on the fittings, you likely have 134. I very seriously doubt you have 12...but it is a possibility. If you do have adapters, just go to the parts store and get you one of those cans of 134 with the little guage on it and follow the instructions as per the ambient temperature and it'll cool it down.

If you DO need to convert, its best to flush the system and put a new dryer in, and of course you have to put the adapters on. Flush everything but the compressor. Too much oil can damage the compressor, also effect its functionality (make it not work as good as it can).
 

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Discussion Starter · #3 ·
Look where the gas goes in, if there are some adapters on the fittings, you likely have 134. I very seriously doubt you have 12...but it is a possibility. If you do have adapters, just go to the parts store and get you one of those cans of 134 with the little guage on it and follow the instructions as per the ambient temperature and it'll cool it down.

If you DO need to convert, its best to flush the system and put a new dryer in, and of course you have to put the adapters on. Flush everything but the compressor. Too much oil can damage the compressor, also effect its functionality (make it not work as good as it can).
i dont see any adapters on the truck, just has a normal air valve like you would find on the tires or fuel rail
 

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Does it have threads on it or does it look like an air hose socket...kinda?


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Discussion Starter · #5 ·
Does it have threads on it or does it look like an air hose socket...kinda?


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it has threads on it
 

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Just Google 134 and 12 fittings. But I have to believe in 96 it something other than 12.

You may have an underhood sticker describing your system too.
 

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85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
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Threaded ports are R12. Air hose looking ports are R134.
 

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Threaded ports are R12. Air hose looking ports are R134.
What he said...and I think this is a 92 and that was the last year for 12...maybe 93.

I think it’s best to take it have it evacuated and converted to 134 by a specialist since it’s like a felony to release 12 into atmosphere


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Discussion Starter · #9 ·
What he said...and I think this is a 92 and that was the last year for 12...maybe 93.

I think it’s best to take it have it evacuated and converted to 134 by a specialist since it’s like a felony to release 12 into atmosphere


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agreed
 

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Discussion Starter · #10 ·
my guestion is, can i just have it flushed and put r134 in it?
or what do i need to do?
 

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my guestion is, can i just have it flushed and put r134 in it?
or what do i need to do?
I dont think so. Certain things arent compatible with R134. What those things are, I dont know. @miesk5 might know?
 

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You may need to swap compressors, that would be the only change because 134 runs at higher pressures than 12, but if your compressor has been replaced in the past 20 years it’s likely to have been upgraded.

May can do some online research and see if your compressor model can handle 12

I’m also almost certain fords use expansion valves and not orfice tubes like GM did, those had to be swapped too. The expansion valve works with both.

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my guestion is, can i just have it flushed and put r134 in it?
or what do i need to do?
I've had 4 different R12 vehicles and 2 Semi's, all I did was put R-134 in them. They make an R134 charging fitting that fits over the R12 fitting.
You say yours still kinda works. I'd put the adapter on, get a can of R134, a hose and gage, and charge it. If it works, you're good to go for a while.
If it doesn't, it only cost you a $4 can of freon. The fitting, hose, and gage you'll need in the future.
 

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Discussion Starter · #15 ·
Well fellows my A/c isnt blowing cold air x.x !!!!!! AH!!!
 
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