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Initial AC System Test and Purging Diagnosis

6:55
16:30
2.3K views

At 6:55 in

Finally Getting Air Conditioning Back? Testing the LSXcalade AC System!

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What happens here

After starting the engine, the presenter uses an infrared thermometer to measure the ambient temperature at the vehicle's air vents, which registers around 90 degrees Fahrenheit. He then attempts to activate the AC system using the car's existing controls. While the temperature initially drops slightly, he observes and hears the AC system 'purging' refrigerant with a distinct 'psshhh' sound, indicating a problem with refrigerant flow or excessive pressure. He re-attempts the manual compressor activation by touching the test wire to the battery, noting that the engine almost stalls under the sudden load, and the purging continues, signifying the system is not cooling properly and is releasing pressure.

Goal: Identify why the AC system is purging refrigerant and not cooling properly.

Tools and materials

  • AC Compressor — The component being tested
  • Cadillac Escalade Cadillac — Vehicle undergoing AC repair and testing
  • Car Battery — Providing power for re-test
  • Car Keys — Starting the vehicle's engine
  • Infrared Thermometer — Measuring air temperature from the vents
  • Test Wire — Connecting the compressor to the battery for re-testing

What they say

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lots of it go anywhere alright well there nitpicker this is a bench test I'm not leaving it like this there's no HVAC on here right now ninety all right now let's turn this on and see what happened oh my god don't on me although it's called boy [Music] it's dropping hard and see it's cooling off the fence inside there [Music] I am and see where it came from maybe there's something I did by having it engaged as soon as the engine started I don't know maybe it was overfilled I'm not too sure but I am stupid so gonna disconnect it and do it again see if it still comes out because I'm down this is how we learn [Music] all right I'm gonna steal thy face you wonder why the compressor disengages under full throttle you can hear when it comes on how much it loads the engine down I don't know I know that ever find out by calling someone who is smarter than me nothing happened here EPA we're fine that is steam from deez nutz

Auto-generated from the video audio.