Part 1. Spray soapy water onto the air conditioner components to locate leaks. You can use dish soap and tap water. Make sure the whole system is coated so that you won't miss a leak. If there are leaks, you'll see bubbles forming around the leak. You can also buy a leak detector kit from your local automotive store or online. Follow the directions for that kit. Watch for bubbles to appear, which indicate a leak.
The leak will interact with the soapy water to create foam. If you see just a few bubbles or they take a while to appear, then your leak is probably small. If you see a lot of foaming, then you probably have a big leak.
Use a recharge kit with a sealant to repair small leaks. A sealant that has a goo texture can cause a clog. Have big leaks fixed by a professional technician. You should not try to fix them yourself, as you could damage the whole system. Not only that, you may leak dangerous chemicals from the car onto the ground. Part 2. Put on your eye protection and gloves. Refrigerant is very dangerous and can result in injuries. It can cause frostbite if it hits your skin. If you get it in your eyes, it can blind you.
Find the low-pressure line port, which will have thicker tubing. There are two ports on your air conditioner. You will add the refrigerant to the low-pressure line port, not the high-pressure line port.
The low-pressure line has larger tubing than the high-pressure line, making it easy to distinguish between the 2. In some vehicles, the low-pressure line port will be lower than the high port, but this is not always the case. Most kits have a hookup that only fits onto the low-pressure port, making it easier to choose the right port. Remove the port cap by unscrewing it. The cap is the little plastic cover that seals the valve.
Hook the pressure gauge hose to the port. Simply click the gauge connector over the open port. This allows you to easily add more refrigerant without overcharging your air conditioner. Check the reading on the pressure gauge. The gauge will provide a reading in psi. Proceed with the recharge if the pressure gauge reading is above 0. A reading of 0 means that there is no refrigerant left in your air conditioner, which will require a repair by a professional technician.
Otherwise, you can charge the system yourself using your charging kit. Part 3. Crank your engine and turn the AC on high cool, high fan. This allows you to check to make sure your parts are working.
Make sure the compressor clutch is spinning. Quick Tips for the Home. Helpful tips? Sign up for our newletter. Sign up for updates from the blog. Thank you for subscribing. Need help? However i need to make a few comments. When adding its always best to hold the can upside down since its a liquid refridgerant. Also adding refridgerant to an empty system is something that needs to be left up to the professionals as the system needs to be properly vacuumed down and kept under a vacuum until refridgerant is added.
Overcharging a system can in fact blow it up. This process can in fact be very hazardous if done improperly and there are so many factors involved with the vehicles AC that can cause a properly charged AC system to not function correctly. If you dont know much about cars id suggest leaving this process up to the professionals.
I have a question. I let someone put the freon in my car day before yesterday. While he was putting in a second a loud noise came from under the hood. Looked as though spraying from the connection of the freon can and instantly it looked like clouds of smoke coming from the opposite side under the hood. It was making this loud screeching noise. It stopped until earlier when i turned the ac on and smoke was coming from under the hood and the loud screeching until i turned it off What did he do to it???
Its severely overcharged and he blew out a gasket or compressor pressure relief valve from my guess. This was one reason for my comment. Question 2 years ago. What did he do to it. He overcharged it and blew a gasket or the pressure relief valve on the AC Compressor from the sounds of it.
This is one of the main reasons for my comment below. Tip 2 years ago on Step 2. To use a self sealing can, you also need an adapter. Screw the adapter onto the dispenser first.
Then screw the can to the adapter. Without the adapter, the can screws on but remains sealed. Both valve are the same size so I took them to auto avance and they were not able to figure out as well.
Can you tell me what I need to know or how do I got by finding out without going to the dealer. Sorry if I use the word valve but I dont not know the right term. Follow the lines from the compressor. The high pressure line will go towards the coolant radiator. The low pressure line will go to the passenger compartment. Did you make this project? Share it with us! I Made It! ClaireS 3 months ago. Reply Upvote. Bossjeff69 Question 4 months ago on Step 3.
Answer Upvote. MichaelM Question 3 years ago on Step 1. ScottF82 Question 3 years ago on Step 7. Latrishabennett jmcdonald23 Reply 2 years ago.
Latrishabennett Question 2 years ago. Don't use this unless you have professional gauges. You can likely borrow them appropriate gauges from Auto Zone or equivalent. Or, just do what I eventually did, take it to Jiffy Lube or equivalent and let them remove all the refrigerant and refill to factory specs. The most common DIY problem is overfilling oil, under or overcharging refrigerant and installing the virus that are sealants. Gloves and safety glasses. The PAG oil used is not good for humans and the gas can cause frostbite.
Sealants rarely work well if at all. They can plug critical parts such as expansion devices or heat exchangers. No, the oil amount is set during build and it impossible to know how much is might have been lost. Overfilling reduces system performance and under filling will destroy the compressor. There are two key issues that make this a non-DIY job.
A high vacuum must be pulled on the system to ensure that every last bit of air is out. And the refrigerant must be carefully weighed during installation. A few ounces over or under can significantly affect system performance.
The DIY install systems only show one of the available pressure readings and in any case charge amount cannot be determined from pressure readings. Personally, I recommend option 5. Refrigerant will cause frostbite in sufficient quantity.
If you accidentally inhale you can be poisoned by it. You have to know which line to charge the system the vapor line or liquid line. If you do not know -Do not attempt it. Refrigerant poisoning happens when someone is exposed to the chemicals used to cool appliances.
Refrigerant is a tasteless, mostly odorless gas. When it is deeply inhaled, it can cut off vital oxygen to your cells and lungs. Limited exposure — for example, a spill on your skin or breathing near an open container — is only mildly harmful.
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