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Technician

The Auto Prof joins MACS Training Event

September 23, 2022

The Auto Prof is an automotive technical training organization. Company principal, Mike Bailey is a licensed automotive technician and instructor since 1991.
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Mastercool returns to MACS Training Event

September 22, 2022

“Mastercool is celebrating our 40th year of supplying professional quality air conditioning service tools and equipment. As one of the fastest growing companies in this market, our primary goal is to drive new product innovation and technologies to make the everyday work of the automotive technician easier.”
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Trans/Air MFG Returns as a MACS exhibitor

September 21, 2022

Trans/Air Manufacturing, Corp. is setting new standards of comfort, reliability, and value for climate control in conventional, electric and hybrid buses and coaches.
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MACS welcomes Coyote International, LLC.

September 19, 2022

When you visit the Coyote International exhibit booth you can see their selection of louvers, hose adapters, switch plates, grilles, vents, hose protectors, control knobs, switch plates, water connectors, thermoplastic rubber parts, and nut covers.
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CPI Fluid Engineering is a new MACS exhibitor

September 14, 2022

CPI, founded in 1971, is a global expert in engineering fluids for challenging applications in heat transfer and compression.  “Our mission is to advance the industries we serve by providing world-class engineered performance fluids, unmatched customer support and innovative collaboration.”
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Don’t overlook a diagnostic clue

September 13, 2022

When thinking about the topic of A/C diagnostic tools, a recovery, recycle, recharge machine (R/R/R machine) is not one of the first tools that comes to mind.  It may not come to mind at all in the world of inexperienced technicians. 
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MACS Welcomes ATech as an exhibitor

September 7, 2022

ATech Training was founded in 1984 with a desire to develop products that aid instructors in presenting a hands-on approach to teaching and learning the skills of diagnosing and repairing vehicles.
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Unlocking the compressor Lock up, PT. 2

August 30, 2022

I was driving the van home in the afternoon. It was about 45° F outside and the heater was on. It had been an uneventful 15 to 20 minutes’ drive at about 55 to 60 mph. Slowing down to make a 90 degree turn on to a different road, a faint grinding noise was heard. I rolled the window down and drove along at about 5 MPH and could hear the noise more distinctly. The next step was to pull over into a parking lot and leave the engine running and raise the hood.
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Why did the compressor lock up?

August 10, 2022

All too often when a compressor lock-up occurs, the compressor itself is blamed for the lock-up. While it is possible for a manufacturing defect to cause a lock-up, there is usually a problem related to the service work or a problem with the system that is the culprit.
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An expansion valve myth explored

July 26, 2022

I have encountered many tech calls where a technician had replaced an expansion valve because of a problem with an evaporator freezing up and was frustrated because that did not fix the problem.
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