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Vehicle AC System Diagnosis for Beginners. A/C System Troubleshooting

Vehicle AC System Diagnosis for Beginners. A/C System Troubleshooting In this video I'm going to show you the steps that you can take to diagnose an AC system that does not blow cold. The first thing you you should verify is, does the compressor turn on. If the A/C compressor does not turn on, then the vehicle is never going to get cold. There are multiple things that could keep a compressor from turning on: no refrigerant, electrical problems, or a mechanical problem with the clutch. If your clutch engages I will also show you how to diagnose problems with your AC system using a manifold gauge set. I will show you the correct way to connect manifold gauge set to your vehicle. Once the gauges are connected to your high and low side pressure ports I will help you interpret the gauge readings to help you find out what is wrong with your vehicle's air conditioner. Links to other AC videos I've done: Compressor Clutch Replacement:    • A/C Compressor Clutch and Bearing Rep...   AC System Flushing:    • How To PROPERLY Flush and Recharge A ...   Tools used in this video: R134A Gauge Set with Vacuum Pump: https://amzn.to/3WRgL4D 1234YF Gauge Set:https://amzn.to/3WWxd3rMy R134A Gauge Set: https://amzn.to/3R4IGKz Vacuum Pump: https://amzn.to/4awnfsF Amazon Store: https://www.amazon.com/shop/repairgeek Help support the channel, buy using my Amazon links As an Amazon Associate I earn from qualifying purchases and your cost is exactly the same. I source all of my service data from the same place that professional shops do. You can as well: https://www.pntrac.com/t/SENKSUZKRktD... #ACDiagnosis #VehicleAC #AutoRepair #diycarmaintenance #airconditioning #acrepair Questions? Shoot me an email at [email protected] Chapters: 00:00 What we are going to cover in this video 00:42 How AC works 2:39 AC system components and functions 6:34 Make sure the compressor engages 7:03 What keeps an a/c compressor from engaging 11:06 How to attach the manifold gauges to the vehicle. 13:56 Static system pressure information 14:29 Reading system pressures 15:25 Ambient temperature information 16:53 Low side pressure normal/High side pressure normal 17:41 Low side pressure too low/High side pressure too low 18:23 Low side pressure too high/High side pressure too high 19:50 Low side pressure too high/High side pressure too low 21:54 Low side pressure too low/High side pressure too high 24:18 Outro Disclaimer: The information, demonstration and any content contained in this video is for informational purposes only. The user Repair Geek makes no warranty, express or implied, regarding the effectiveness or safety of the contents of this video. In no way should the contents of the video, including the tools used, be repeated or tried by anyone. Viewers should only seek the help of a trained professional located at a licensed auto repair shop for any fix, modification, alteration, or any change to their vehicle. Repair Geek shall not be liable for any injury, damage, or loss to any person or property that may result from use of the tools, equipment, or any content contained in this video. In addition, there is no way to guarantee that the video is not altered or modified or is not in the final form submitted by Repair Geek and therefore, Repair Geek does not warrant that the video is unaltered or not modified. The links on this video to products are for informational purposes only and in no way are an endorsement of the safety or effectiveness of the particular product. Viewers understand that anything contained in this video or linked to or from this video is the sole responsibility of the viewer and in no way provides an express or implied warranty as to the safety or effectiveness of any linked tool, product, or video. Therefore, viewer agrees to release, waive, and discharge Repair Geek or anyone affiliated with Repair Geek, from any and all liability, claims, demands, actions, and causes of action whatsoever arising out of or related to any loss, damage, or injury, including death, that may be sustained by the viewer, or to any property belonging to viewer, regardless of whether the loss is linked to the use of the contents of this video, or otherwise and regardless of whether such liability arises in tort, contract, strict liability, or otherwise, to the fullest extent allowed by law.