Key Elements To Proper External Airflow | Pro Training Power Hour

In this session of Pro Training Power Hour, Pro Training Instructor Peter McArdle discusses the importance of external airflow, the difference between viscous and electro-viscous fan clutches and how they work, fan clutch diagnosis and service tips, electric cooling fan tips and ends the session with a discussion on active grille shutters.

Chapters:
0:00 Introduction
0:59 Topics
1:54 Importance of Condenser Airflow - Demonstration2:15 Dramatic Impact of Reduced Airflow
5:28 Inadequate Airflow
8:26 Evolution of Cooling Fan Dives
11:03 Fan Clutch Families
11:45 Anatomy of a Viscous Fan Clutch
15:05 How Fan Clutches Work
15:29 Electro Viscous Fan Clutch
16:15 Electro Viscous Fan Clutch Designs
16:26 EV Fan Clutch Control: GM
17:39 EV Fan Clutch Control: Ford and RAM
18:21 Diagnostic Dilemma - Is the Viscous Fan Clutch Engaged?
20:57 RAM Diesel Trucks - Repeat Compressor Failure
23:12 Always Check for DTCs - MIL On or Not
23:27 Fan Clutch Installation
23:53 When Should the Fan Clutch be Replaced?
25:18 Live Demonstration
45:00 Electric Cooling Fan Circuit Considerations
46:43 Fan Control Strategies
47:38 2002 Camry Cooling Fan Circuit
48:48 What Could Go Wrong?
49:00 Check Cooling Fan Current Daw and Voltage
50:16 Case Study: 2013 Chevy Sonic 1.8L
51:46 Active Grille Shutter Operation and Service Tips
55:13 Session Recap

Pro Training Power Hour is a free, live virtual technical series that features live demonstrations from Standard® Pro Trainers. Each session will provide you with a systems overview, diagnostic recommendations and installation tips.

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