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There are two ways. The old R-12 A/C's have a "screw thread" style service fitting for adding refrigerant. These resemble a tire valve. R-134A systems use a "quick connect" type fitting with no external threads. These fittings are on stock R-134A and R-12 systems that have been retrofitted to R-134A. The purpose is to prevent someone from charging R-12 into an R-134A system and vice-versa. Also, retrofitted A/C's should have a label saying "Retrofitted to R-134A," or something to that effect. The label should also say the freon charge weight and type of oil in the system, usually a polyol ester oil (POE or ester) in retrofitted systems and a polyalkylene glycol (PAG) in stock R-134A systems. Look for both the "quick-connect" style fittings and retrofit labels on the vehicle in question.

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โˆ™ 2005-05-28 03:50:11
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Q: Can you tell if a car has been converted to use R-134a freon?
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How much freon goes in a navigator?

If you got to any auto parts store, they will have bottles of r134a that you can buy that have gauges in the handles that will tell you when you have enough in it. If you system wont cool or is out of freon you have a leak and should get it check to have a repair done, an ac system with out freon has no lub either and that will lead to compressor burn out. The freon cools the air and lubs the compressor.


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I have a '92 and it is Freon 12. There are a couple of ways to tell. 1. There is a sticker under the hood that will tell the type of freon and the amount. 2. The best way is to look at the freon input connection. Freon 12 is a 1/4" flare fitting and freon 134A is much larger. A freon 12 system can be converted to 134a with a kit that is very available. They make these kits because freon 12 is unavailable and is now illegal to sell.


How do you get a 1986 Volvo to take freon?

Everyone will tell you it's better to take your car to the shop to have AC work done. It can be dangerous and illegal to vent the freon into the atmosphere. But first of all, we need to know if the AC has been converted to R134A? If it's R12 you're going to have to convert it to the readily available R134A. If it is already R134A and by "to take freon" you mean add freon, then you add it to the low pressure side port. It's said that the hose that connects the can to your AC system won't connect to the high pressure side, but do not even attempt to do this. Thus the dangerous part earlier. I have heard it can explode. The low pressure side fitting is usually under a blue cap. And the high side is under the red one. Also do not overfill. This can be dangerous as well. If you have added a can and it's still not getting cold inside do not continue to add any more. Something is probably broke and adding more freon won't help it. But once again it is recommended to take it to the shop.


Does your 1993 Chevy astro use r12 refrigerant?

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What type of freon does a Chrysler New Yorker 6 cy 3.3L engine take?

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There should be a sticker under the hood indicating whether it uses R12 or R134A. Unfortunatley a lot dont. The only way to tell is by the high and low side fittings. R12 fittings are bothe the same size. R134A has two different size fittings where one is larger than the other, ussually the high side fitting is larger than the low side.


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How can you tell what kind of freon is in a tank?

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What if r12 was changed to r134 and adaptors were removed - how can you tell what freon is in it?

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