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Buy yourself a large can of R-134a refrigerant from any auto parts store and follow the instruction on the can itself; it's a cinch. Make sure the refrigerant comes with a connector hose and gauge. The refrigerant was about $50, but you get $10 core charge back when you turn the empty can back into the auto parts store.

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โˆ™ 2012-04-29 03:32:18
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Q: How do you recharge the AC in a 2002 Mercury Cougar?
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Connect a gauge to the low side ac port. Connect Freon to the gauge. With the ac running, open the valve and allow Freon to fill the system.

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Should be on one of the lined near compressor looks like tire valve. there will be one for high side and one for low (color coded blue usually) fill on low side

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Where do you go to recharge a 1986 Mercury Cougar with freon how much does it cost and would it be better to retrofit the car?

At this point it is almost impossible to find Freon 12 and if you CAN find it you will pay almost as much as the entire car is worth just to recharge the AC. Retrofitting is a good option at this point. Most AC technicians will try to convince you that it is a difficult and expensive process to convert your AC to 134A, but in reality most vehicles have no problem. The only real problem is the oil that is used to lubricate the compressor. Some of the AC oil used with Freon 12 does not work with 134A so the technicians will evacuate and flush your AC lines then add new oil and recharge the system. A GOOD AC technician will be able to help you and will know the difference. If you don't NEED to purge the old oil he will be able to let you know and you can get by with just a little 134A added to the AC and some new fittings.