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Checking Automotive A/C Pressures (updated)

Checking Automotive A/C Pressures


 


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How To Charge an Auto AC System
In this video I show you how to properly charge an empty automotive R134a A/C system after servicing it. I can not stress safety enough when working with refrigerant gloves and safety glasses are a must. Equipment wise the bare minimum you will need is a manifold gauge set, a motorized vacuum pump, disposable refrigerant cans, and a tapping valve. If your system has ANY refrigerant in it as indicated by your gauge set you MUST have it evacuated before disassembling the system. Venting refrigerant from the system to the atmosphere is against EPA regulations. Intro and outro music Welcome To The Show by Kevin Macleod (Incompetech.com). Due to factors beyond the control of Bushougoma, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Bushougoma assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Bushougoma recommends safe practices when working with the tools or equipment seen or implied in this video. No information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not Bushougoma.





Automotive HVAC Pressure Diagnostics
Automotive HVAC Pressure Diagnostics... LINKS: http://www.autodiagnosticsandpublishing.com/TransTS.html http://www.autodiagnosticsandpublishing.com/CBT_Auto_Traning.htm Pressure analysis diagnostics is the cornerstone of properly doing a climate control system assessment. As we all know, the HVAC systems is composed of a high and a low pressure side. The orifice tube or expansion valve is the one components in between these two refrigerant conduits. The compressor of course is the one in charge of pressurizing the refrigerant. Pressure analysis is by far the best, and probably in many cases, the only way to properly diagnose the dozens of specific issues with the automotive HVAC system. But first, here are the various scenarios relating to pressure analysis. Before we go into it, it is important to understand what the baseline pressures should be. The normal HVAC baseline is about 39 PSI on the Low-Side, and about 250 PSI on the High-Side. How far away we deviate from this baseline, is what's going to determine our issue. Here are the different analysis scenarios. Case 1... High pressure on the Low Side and baseline pressure on the high side. This may translate to say about ... Get the whole story right now in this video... Enjoy...





How To Recharge an AC System - EricTheCarGuy
Visit me at: http://www.ericthecarguy.com/ Finding leaks video: http://www.youtube.com/watch?v=95RdGLFIbL8 Basics of AC: http://www.youtube.com/watch?v=w17DpGCcRj8 AC Performance Test: http://www.youtube.com/watch?v=XU_A4wNuHXI AC pressures: http://www.aircondition.com/tech/questions/82/ AC pressures 2: http://www.idqusa.com/faqs.php?faq=74&faq_id=74&category_id=18 As I said in the video you need to be responsible when dealing with refrigerant, also in some locations it's not legal for you to perform your own AC work so keep that in mind and observe your local laws. --- Click below and Stay Dirty Visit me at EricTheCarGuy.com http://ericthecarguy.com/ Visit EricTheCarGuy Forum http://www.ericthecarguy.com/forum/default.aspx Visit my Facebook Page: http://www.facebook.com/EricTheCarGuy --- Stay dirty ETCG Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.





auto ac diagnosis
Mitsubishi Montero Sport. 2001. AC works well until the belt breaks. with gauges applied. High side trips compressor off at 350. When rpms are raised, belt slips. My guess, the orifice is partially blocked.(update 8/4/2011) parts ordered, I will be replacing it. Update 8/6/2011 system had too much oil. I allowed the oil to blow out and slowly recharged the system. Working great. did not replace orifice.





How to Evacuate AC System
http://www.buyautoparts.com/how-to/ To evacuate the ac system have both of the couplers installed and both of the valves completely open. The low side gauge should start to draw a vacuum. You should leave the vacuum on for 30 minutes to an hour. You can recharge the system after you've pulled the vacuum on the ac system.





AC Diagnostics - AutoZone Car Care
http://www.autozone.com/autozone/ACjob/auto-air-conditioning-service.jsp In the second installment of the AutoZone Complete Car Care - AC Repair Series, Bruce Bonebrake shows you how to complete a visual inspection of your auto AC system. Also learn how to use a gauge set to diagnose AC problems and how to interpret the gauge readings. Get everything you need to do the job right at http://www.autozone.com





Part 2. How to properly charge an auto AC R134a refrigerant air conditioning system.
Part 2 of "How to properly charge up an auto R134a AC system" using pressure gauge and off the shelf 12 ounce R134a refrigerant. Note about charging Liquid (can upside down) versus Vapor (can right side up): The freon can should be upright so that refrigerant "vapor" is drawn into the low side. Remember that the Low side, also known as the suction side, normally operates as a "Low Pressure Vapor" state that is drawn directly into the compressor. You don't want to "slug" the compressor by inverting the can and adding freon in the liquid state. A caveat to the above statement is that sometimes it may be necessary to invert the FIRST can(initial charge) for a few seconds at a time to "prime" the system with freon so that the compressor will engage. But you should never charge an AC system with pure liquid refrigerant. The compressors job is to "compress" refrigerant vapor coming from the Low side. The compressor is not designed to compress liquid and can be damaged if too much liquid is put into the low side.





A/C Charging and Evacuating Part II
A/C Charging and Evacuating , Fanshawe College





Manifold gauges
After replacing the compressor and recharging the system on my '96 S-10.





Simple fixes that might get the car's AC system working.
MotorWeek's Pat Goss (RockAuto.com is a MotorWeek Sponsor) suggests easy parts to check first when a car's AC system is not as cold as it should be. He also explains what not to do.





How To Find and Repair AC Leaks - EricTheCarGuy
Visit me at: http://www.ericthecarguy.com/ How To Recharge an AC System: http://www.youtube.com/watch?v=lglPJuBXVeE Basics of AC: http://www.youtube.com/watch?v=w17DpGCcRj8 AC Performance Test: http://www.youtube.com/watch?v=XU_A4wNuHXI I suppose this has been a long time coming but for me I wanted to make sure that I made a video that would be useful to you as well as emphasized the importance of good practices when working with AC. Keep in mind refrigerant is a CFC meaning that it pretty much kills the ozone layer and if you don't respect that you WILL cause environmental damage even a little adds up so please follow the precautions in this video when working on an AC system. The other thing about AC is that it involves a lot more than just shooting a can of refrigerant into the system when it's not working right there are many systems that come into play that you need to consider such as; the health of the cooling system, cooling fan operation, the mechanical operation of the components of the system, the operation of the HVAC inside the dash, and the electronics so keep in mind if you're having a problem with your AC it could be much more than just a simple leak. I'll get off my soap box now. --- Click below and Stay Dirty Visit me at EricTheCarGuy.com http://ericthecarguy.com/ Visit EricTheCarGuy Forum http://www.ericthecarguy.com/forum/default.aspx Visit my Facebook Page: http://www.facebook.com/EricTheCarGuy --- Stay dirty and stay cool ETCG Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.





A C Switches
A/C pressure switches are pretty straight forward. They are both, electrical switches and pressure transducers. Their purpose as electrical switches are to interrupt the circuit. There are many, many different arrangements that these switches can be configured in an electrical system. So, always be sure to review the diagram for the system you are working on.





Finding and fixing an A/C Leak
Using sound to find an a/c leak, and replacing the service valve without discharging the system





AC System Basics - EricTheCarGuy
This is a kind of video response to a question I got from RadicalComedy about servicing her AC system. Keep in mind that this is a very basic overview of the components and operation of the AC system. In future installments I plan to get more in depth about the operation and function of these parts but for now I think 6 minutes of your time is enough. Visit RadicalComedy's channel http://www.youtube.com/user/RadicalComedy Visit me at EricTheCarGuy.com http://ericthecarguy.com/ Visit EricTheCarGuy Forum http://www.ericthecarguy.com/forum/default.aspx Visit my Facebook Page: http://www.facebook.com/EricTheCarGuy Stay dirty and cool if you can. ETCG





Fixing Car AC That Doesn't Blow Cold Air
Scotty Kilmer, mechanic for the last 46 years, shows how to fix a cars air conditioner that doesn't blow cold air. And, If you like my car help, be sure to watch my live car talk show every Saturday morning at 10 AM CST on YouTube. I answer your car questions LIVE there. Just check it out at https://www.youtube.com/watch?v=VognjkYaMjg&list=UUuxpxCCevIlF-k-K5YU8XPA&f eature=c4-overview . And remember, every TUESDAY I upload a new video, so don't miss them.





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