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A/C Manual

How the A/C System works
Understanding Superheat, Latent Heat and Humidity
Recharging and Retrofitting
Diagnostics and understanding the Gauge Readings
Performance Testing the Auto A/C System
Proper Auto A/C Leak Detection Methods
Flushing the A/C System

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Your best source for complete troubleshooting and diagnosis information on auto A/C systems. Our information provides proper repair, recharge, service and maintenance procedures for all automotive air conditioning systems. Regardless if you have a current CCOT (cycling clutch orifice tube) system or an expansion valve and POA valve system, we've got the information you need. From step-by-step help on retrofitting and recharging to complete A/C compressor or component replacement, our A/C manuals provide you a quick and easy methods that have been proven helpful to everybody from the apprentice to the professional.

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Section 4
Diagnosing Auto A/C Systems

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Diagnosing Auto A/C Systems: This section is focussed on understanding and interpreting the pressure gauge readings. That's because anybody can read the numbers on the gauges... but diagnosis starts with the interpretation of those readings. What are 'normal' readings? Are the gauge readings correct for this system? What should they be? The diagnosis has to start with understanding what the gauge readings should be... then determining what the problem is.

Typical Gauge Readings Defined:
This section starts by providing the details of what the typical or normal gauge readings are for each of the system designs (Expansion Valve; CCOT; TXV and Cycling Clutch; Variable rate and EPR valve systems). Therefore understanding what a proper operating system should be. Understanding the proper gauge readings provides the basis for understanding the problem gauge readings.

Interpretation of the gauges:
Understand what the gauge readings are really telling you. High pressures generally indicate problems with overcharge or poor cooling problems while excessively low pressures point to system leaks, low charge and problems with refrigerant flow through the system. Each of these conditions are reviewed in detail.

Universal Diagnosis Chart:
All of the gauge reading combinations are explained in this excellent Universal A/C Diagnosis Chart. For each of the gauge reading combinations, we've provided all the possible troubleshooting procedures. That helps save time and money immediately! As an example, consider the problem gauge readings of having the high pressures are too low and low pressures are too high. The chart details the diagnosis towards compressor failures, inoperative clutch problems and internal valve problems. Each of them including explanations of the problem area.

Troubleshooting Details:
For each of the problem gauge reading combinations in the Universal Diagnostic Chart, illustrated and detailed troubleshooting and diagnostic procedures are provided. They pin point and detail the problem areas and provide important notes and cautions that have to be considered. Repair processes are outlined along with Tips and Tricks used by the professional A/C technicians.

7 Most Common A/C System Failures Explained:
Quickly learn the fast track to A/C system diagnosis when you understand the 7 most common A/C system failures on the road today. This section not only lists the most common failures, but it includes the troubleshooting procedures plus the pro's Tips and Tricks you need to complete proper and accurate diagnosis ever time.

WIZ Charts™ :
WIZ Charts™ are your best Quick Reference Guide that can be printed and used at any time. They provide an excellent review of the entire section so you're never caught without help when diagnosing the A/C system. This section includes 2 WIZ Charts™ ; 1) The Universal Diagnostic Chart and 2) Proper Gauge Readings for all A/C System Designs. With WIZ Charts... you're never on your own!

Complete information for quick and accurate diagnosis!
Not sure about the gauge readings? Problems with diagnosis? Spending too much time guessing and replacing parts without solving the problem? Get the experts details and understand what the gauge readings are really telling you. Fast and accurate diagnosis means money in your pocket! This section provides all the details you need to properly check and diagnose A/C problems the first time... and every time!

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Take a closer look at more details
included in Section 4

Detailed illustrations provide the repair and troubleshooting information that's needed to help make quick and accurate diagnosis of any A/C system on (or off) the road today!

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The unique Universal Diagnosis Chart included in this section provides all the possible gauge reading combinations and the troubleshooting procedures to correct the problem.

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Fully illustrated troubleshooting and repair procedures for each of the problem gauge reading combinations included in the Universal Diagnostics Chart.

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Details provided on each of the problem gauge readings, explain the problem and the proper procedure to test, troubleshoot and repair.

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Even difficult details like internal compressor failures are explained and clearly illustrated.

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All of the 7 most common A/C failures are listed and explained with detailed diagnosis and troubleshooting procedures included. That alone is guaranteed to save time and money!

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Plus you get these great WIZ Charts™!
They're your best Quick Reference Summary!
All of this is included in Section 4

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The complete Universal Diagnosis Chart with quick reference troubleshooting procedures makes this WIZ Chart™ one that you will never want to leave behind! The second WIZ Chart™ provides the typical gauge readings for all the A/C system designs on the road today. Helps you understand the proper readings on a working system.

Don't let little mistakes cost you $1,000's of dollars!
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Get your FREE review of this chapter right now! The Trial of Section 4 is available for immediate download! See more about Diagnosing Auto A/C Systems here!

Why wait? You know that one single mistake with auto A/C service could easily cost you more than 10x the price of this manual! But what if that error leads to a compressor failure? That could cost up to 100x the price of the manual! You can get the full version of this manual on line right now with Immediate Digital Delivery 24/7 so there is no waiting!
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BEFORE YOU PURCHASE... We're confident that you will be satisfied with our manuals. They've been compiled from the most reliable sources. All information conforms to industry accepted standards. In fact, just the TIPS and TRICKS included in this section are probably worth twice the value of the manual!
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