How to Diagnose and Recharge Your AC System with Refrigerant - Using an A/C Manifold Gauge Set
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- Опубліковано 9 тра 2016
- In this video I will show you how you can use an air conditioning (A/C) manifold gauge set to both diagnose problems and add refrigerant to your car's ac system. We will go over some different pressure readings you could have for the low and high pressure sides of the ac system, what could cause those and than onto a step by step procedure on adding a refrigerant to your car's ac system.
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Due to factors beyond the control of Ratchetsand Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchetsand Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchetsand Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchetsand Wrenches.
Excellent video...with just one error. You did not show to purge the yellow line of air when you added the 134a.
You forgot to purge the yellow line from trapped air
After watching numerous other YT videos on this subject, I found that yours is the only one to logically explain the steps to topping up the refrigerant. You were the only one to mention the IMPORTANCE of making sure the valves are in the correct position BEFORE attaching to ports (and can of refrigerant). Excellent! The best presentation yet on this subject! Keep up the good work!
After you attach the can of Freon, don’t forget to slightly loosen the yellow line at the manifold so you can burp the air out of the line. If you don’t do this, you will let air into the system and this is not good. He forgot that step.
Whats worse than a a/c that kinda works but can keep you alive? One that doesn't work at all. I spend what $1000+ and had all the gauges, specialty hoses, tons of "how to" .. Most a/c shops freaked when they see either my Pantera or Delorean so I had to DIY. I kept them running for a decade so it was surprising that a "quick top off" is what almost ruined my a/c system. I was on a road trip when the Delorean ac blew 70 degree air. That car HAS to be cooled so a quick Napa stop, a bottle of r134 with the "gauge". 10 minutes late sounded like a shotgun went off behind my head and white smoke. That $15? bottle cost me $800+. Then I drove 300 miles at 90 degrees. Just say NO to those DIY bottles.
you dident purge the yellow line before u let the 134a into the system so u also let a yellow line full of air into the system as well.
Best way, and fastest to get the liquid out of the can is to keep it upright in a bowl of warm to hot water. Also, when adding refrigerant make sure that high side(red) valve is closed off.
Great video! I would add (my apologies if I missed you covering this) that you need to purge the air from the yellow line after you connect the can of refrigerant and before you open the low side valve to start sucking the new refrigerant in. This will keep moisture/air out of your system.
I would suggest a separate bottle for recovery if you don't know if there are contaminates in the system, otherwise you will contaminate you good bottle if you bought it new. I use a separate bottle. I'm not going to risk a questionable system on my customer's. If it's you car and you still want to risk contamination to your system after you just recovered everything in the system, go for it it's your vehicle.
Good explanation. I would suggest using the refrigerant to flush the air from the charging hose before allowing it to flow into the AC system. There is a valve for that purpose on your manifold gauge set. Sometimes you don't get away with turning the can upside down and allowing refrigerant to flow into the system in the fluid state. I'd keep it flowing in the gaseous state just to be safe.
I am reasonably proficient with a/c. Watched several videos just for a refresher. Yours is one of the best if not the best. Great job.
Outstanding video demonstrating step by step analysis. This man is a natural born instructor.
A great educator with genuine knowledge!!! Much better than others....
This guy is the best, after this I’m ready to fix my ac
Excellent presentation! It's the most useful ac troubleshooting video I found on UA-cam. Kudos!
Very clear explanation. I especially liked your trouble shooting guide about the meaning of incorrect pressure readings. Very helpful. You even showed what they mean on both expansion valve and orifice tube systems. Very good. Thank you.
This is a very good and helpful video.
Best videp ever explaining the 134a gauge levels. 👍😎
Thks for the update. Before you open the low-pressure value I'm sure you bleed the air from the service line before opening the low side. Thks again. You are a skilled technician.
Thank you so much! I needed to have this explained to me with details like this video did.