Category Archives: Electrical/Electronic

MACS 2021 Training Event: Learn about Behavioral Characteristics of Various Compressor Types


There is a multitude of compressor designs being used across the vehicle fleet, and even some certain models could be fitted with different compressors. That is why it is important for technicians to know their differences and how they operate. … Continue reading

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MACS 2021 Training Event: HVAC Technology, Diagnosis and Repair


Mobile air-conditioning systems design and operation has changed dramatically over the past 10-15 years. This can make diagnosing and repairing a modern air conditioning system especially difficult. Join Peter McArdle of Four Seasons for this class where he will explain … Continue reading

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Vehicle power management and HVAC


September/ October 2019 ACTION Magazine Vehicle power management and climate control In the case of many late model vehicles, there are more and more systems utilizing electrical power management strategies than ever before. The wrong battery or, worse, generator installed … Continue reading

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Last call to register for the Automotive Software and Electronics Boot Camp


The Mobile Air Conditioning Society (MACS) Worldwide is sponsoring the Automotive Software and Electronics Boot Camp with Dr. Mark Quarto in partnership with FutureTech Auto at the MACS training center in Lansdale, PA September 16-20, 2019. Top auto repair shops need to learn … Continue reading

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The future is electric!


June ACTION 2019 Hybrid and electric vehicle air conditioning compressor hardware, power controls and diagnostics For more than 15 years, hybrid and electric vehicles have been using electric air conditioning compressors.  The reason for the use of these air conditioning … Continue reading

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Engine cooling fans-enough time?


By Steve Schaeber, MACS Technical Editor The hottest days of summer are the most taxing on an engine cooling system. Drivers run their air conditioners to stay cool, which makes the system work even harder, particularly when driving in humid … Continue reading

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Blower motors are essential to proper HVAC performance


The blower motor can make or break HVAC performance. Solid blower motor troubleshooting, along with an attention to detail, will help ensure that your customer’s HVAC system performs properly, the way the carmaker originally intended. When diagnosing HVAC issues, keep … Continue reading

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Hybrid and battery electric vehicle A/C


By Steve Schaeber, MACS Technical Editor Internal combustion engines have powered our transportation for decades, including the cars and trucks we drive each day. Over the years we’ve seen attempts to build vehicles that run on something out of the … Continue reading

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Denso uses A/C to alert drowsy drivers


By Steve Schaeber, MACS Technical Editor The basic technology has been around for a while now, going back at least 10 years on Toyota and some luxury car brands such as Mercedes, Lexus and Volvo, but this new concept by … Continue reading

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Repeat blower motor issue


By Steve Schaeber, MACS Technical Editor An old boss of mine used to have a saying that goes something like: I ain’t got time to be doing the same thing two and three times! In fact, I can still picture … Continue reading

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