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Soap and Water, an air compressor and manifold gauges are all you will need to find 95% of the leaks in an A/C system. The vehicle being used for this video is a 1995 Jeep Cherokee but the tests shown can be applied to any AC system.
Engine Performance Diagnostics
Topics discussed
- A/C blows warm air
- A/C compressor does not engage
- how to determine the cause of in-op A/C compressor
- how to use a set of A/C manifold gauges
- how to locate an A/C system leak with soap and water
- how to use compressed air to find an A/C leak
- A/C line identification
- ATD Tools 3695 Deluxe Dual Aluminum A/C Manifold Gauge Set
- FJC 6909 3.0 CFM Vacuum Pump
- FJC 9281 Vacuum Pump & Gauge Set Assortment
- Bostitch BTFP02012 6 Gallon Air Compressor 150PSI
- Meguiars M9911 Spray Bottle W/Sprayer
- Mothers 05664 California Gold Car Wash 64 oz
- Bayco NSR-2166R Multipurpose 66 Led Rechargeable Work Light - Red
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HVAC and Cooling systems troubleshooting
Related videos:
A/C clutch not engaging - 2005 Honda Odyssey:
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How to test a blower motor and resistor (subscriber requested):
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For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium. There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!