Is your vehicle blowing warm, hot or humid air with the air conditioner on? If so, this video will be perfect for you. The wonderful, delightful and marvelous cool air within my vehicle's AC system decided to stop working. Fortunately recharging the ac in your car is quick, easy and painless.

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When an air conditioning system loses its ability to cool properly, it may be necessary to recharge the system with new refrigerant. Recharging the ac in your car replaces lost R-134a refrigerant and oil in within the a/c system. Steps - Start the vehicle and set the air conditioning to MAX setting. Locate the vehicle’s AC compressor for reference, and it’s important to monitor what the AC clutch is doing. When the AC compressor is disengaged, only the outside of the pulley will turn. When it’s engaged, the entire clutch assembly will turn, driving the compressor. Your compressor is designed to not engage at all when the refrigerant pressure or volume is too low. Now LOCATE THE LOW-SIDE SERVICE PORT. This port is typically found on the line connecting the accumulator and compressor. The high side fitting is located between the AC compressor and condenser and is the larger of the two fittings. Consult the service manual to verify the exact location of the low-side service port. If hooking a can of refrigerant with a single hose/gauge to the car, you will use the low side.

*Most 1994 and older vehicles used R12 as the original refrigerant, if the vehicle being serviced is still using R12, it must be evacuated and retrofitted. Mixing R12 and any other refrigerant is illegal. Never use the high-side port to add refrigerant, doing so is very dangerous and could cause harm. You will notice an R12 style fitting right away as the hose screws on to attach and has the look of a tire valve, while an R134A fitting is a larger quick-connect. ALSO – starting in 2013, many vehicles began using 1234YF refrigerant. This refrigerant is NOT compatible with R134A, and should be left to the professional to troubleshoot.

Attach the charging hose to the low-side service port and ensure that you have a secure connection. If the hose does not attach easily you may be using the wrong port. Following the instructions on the refrigerant package, add refrigerant to the system. Monitor the pressure readings constantly while charging the system. If the system was low, your AC compressor clutch will not engage. You should notice that as the low-side pressure reaches approx. 25-30PSI, that the compressor clutch will engage. You may notice the compressor clutch engage and disengage as more refrigerant is added. Eventually, it should stay engaged all the time. It is absolutely important to note here that over-charging the system will cause permanent damage. If you are unsure of the current pressure, or amount of refrigerant in your system, you should seek a professional mechanic near you to address the issue. After the air conditioning system is charged to the proper pressure, remove the charging hose from the low-side service port. After you’ve recharged your air conditioning, the difference should be noticeable immediately. It may be worth checking the pressure once or twice after recharging in case the low refrigerant level was caused by a leak in the system. If you believe there is a leak, get a UV light and some UV dye so you can find the leak. The UV dye will make the hole visible when the UV light is shined onto the A/C components.

Chapters:
0:00 - Intro
:20 - Checking a/c clutch
1:05 - Enough a/c refrigerant?
2:05 - Finding low pressure port
3:03 - Adding refrigerant
4:30 - Cold air
4:51 - Wrap up

Note:
Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program.

Publication, reproduction or distribution of this film is strictly prohibited.

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