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  1. You are here:  
  2. Home
  3. HVAC and Cooling systems troubleshooting

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  • (Chapter 1) Misfire ID, Compression Test, Vacuum Leaks, Fuel Trim, Head Gasket, Restricted Exhaust, Low Power, DVOM
  • (Chapter 2) Switch Inputs, digital signals, module communication, hall effect testing
  • (Chapter 3) Transistors, Solenoids, Computer Controlled Output Testing
  • (Chapters 4 and 5) Fuel Trim and Oxygen Sensor Testing
  • (Chapter 6) Temperature Sensor, Thermistor Circuit Tests
  • (Chapter 7) Potentiometer-position sensor tests TPS, EVP, APP, VAF etc
  • (Chapter 8) Pressure Sensor Testing, MAP, BARO, DPFE, fuel tank and rail pressure sensors
  • (Chapters 9, 10 and 11) The 5v Reference and Signal Circuit Quick Tests
  • (Chapter 12) Mass Airflow Sensor Testing
  • (Chapters 14, 15,16) Fuel Delivery and Fuel Pressure Testing
  • (Chapters 17, 18 and 19) Fuel Injector Testing
  • (Chapter 20) Idle Speed Problems and Testing
  • (Chapter 21) Ignition inputs, cam and crank
  • (Chapter 22) No Spark Troubleshooting, Ignition Coil & Module Testing
  • (Chapter 24) EGR Flow and System Tests
  • ABS Wheel Speed Sensor and System Testing
  • 2009 Chevy Silverado 2500 3" lift kit install
  • Starting, Charging and Battery system problems
  • Other Automotive Repair
  • Picoscope Basics
  • Ground circuit problems
  • Non-Repair Videos
  • HVAC and Cooling systems troubleshooting
  • EVAP System Testing
  • RV Maintenance and Repair
  • Jeep Cherokee XJ flat tow prep

A/C Leak Testing and Repair part 3 - 95 Jeep

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In this part 3 of 3 video I will show you how to properly recharge an A/C system using a set of manifold gauges and small cans of R134a refrigerant The tools I am using can be found further down in the description of this video.

View More About This Video: A/C Leak Testing and Repair part 3 - 95 Jeep

A/C Leak Testing and Repair part 2 - 95 Jeep

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In this part 2 of 3 series I'll be showing the following: how to install and test a used compressor using compressed air, R&R of condenser and lines, adding refrigerant oil and evacuation. I also install a new cooling fan shroud.

View More About This Video: A/C Leak Testing and Repair part 2 - 95 Jeep

A/C Leak Testing and Repair part 1

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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.

Read more: A/C Leak Testing and Repair part 1

Electro Viscous Fan - P1482 Cooling Fan Speed Sensor Circuit

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How to troubleshoot an electronic clutch fan circuit on an Olds Bravada or Chevy Blazer with a 4.2L engine. This clutch fan has 5 wires. (2) output control (3) speed sensor input (hall effect design)

View More About This Video: Electro Viscous Fan - P1482 Cooling Fan Speed Sensor Circuit

A/C clutch not engaging - 2005 Honda Odyssey

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This is a 2005 Honda Odyssey with an A/C system problem. The A/C clutch does not engage, even though the system is full of refrigerant. In this video I will walk you through testing system pressures, and how to test the inputs and outputs of any A/C system.

View More About This Video: A/C clutch not engaging - 2005 Honda Odyssey

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