Tech Tip: No or Insufficient Cooling Output in Mercedes-Benz C-Class
If an owner of a 2004 C 240 Sedan complains of no or insufficient cooling output, it could be caused by the refrigerant line, whose inner coating has come loose in the flexible section of the hose, causing constriction.
Stronghold for 1234yf is Crumbling – Part II
In this installment of a two-part editorial from R744.com, high refrigerant costs, the need for new plants and pending patent issues put the use of HFC-1234yf more and more into doubt.
Diagnosing A/C Systems with Automatic Climate Control
Diagnosis is often the biggest challenge, especially if the cause of a no-cooling problem is not obvious. Is it the refrigeration circuit, an electrical problem or a control issue?
Supporters of R744 in Mobile A/C Systems Express Problems with 1234yf Refrigerant
The growing reluctance over 1234yf has now led its own proponents and Original Equipment Manufacturers (OEMs) to dreadfully search for a system solution that would enable the use of the refrigerant, no matter what the system cost and efficiency implications
Directions: The Impact of HF0-1234yf on Service Shops
According to the new refrigerant’s developers, there are chemical differences between HFO-1234yf and the current R-134a system. As a shop owner, you’ll need to learn the Safety, Equipment and Charging Issues surrounding this new refrigerant.
Leak Detection Tools & Equipment
Having the right tools to help you find leaks can save time and effort, and reduce the risk of comebacks. This special section features some common types of leaks and what kind of equipment you can use to find them, as well as a Leak Detection Product Showcase.
Lexus Tech Tip: A/C Condenser Fan Relay Corrosion on 1998-2000 LX 470s
Some 1998-2000 model year LX 470 vehicles may have a condition in which the A/C condenser fan continues to run after the ignition is turned off due to corrosion in the relay connector. A repair kit (P/N 88840-60070) consisting of a new relay and sealant has been made available to correct this concern.
MACS Releases Updated A/C & Cooling Systems Specifications Manual
MACS has updated the A/C & Cooling System Specification Reference manual to include service and repair information on vehicles 1996-2010.
New Program Gives Shops Recognition for Proper Mobile A/C Environmental Services
Mobile air conditioning service facilities equipped with the latest tools, equipment and trained technicians now can take the Climate Protection Pledge and be recognized by the Environmental Protection Agency (EPA) and consumers for environmental leadership.
Tech Tip: Jetta’s A/C is Not Working; No Power to the A/C Clutch
Potential causes include malfunctioning A/C switch, air conditioner high pressure sensor, defective fan control module, ground, power and/or throttle basic settings.
U.S. EPA Climate Protection Partnership and MACS Worldwide Join Forces for Free Mobile A/C Informational Webinars
First free webinar scheduled for Thursday, Dec. 10, 2009 at 1 p.m. EST.
MACS Offers Section 609 Test Prep Webinar
Since 1991, MACS has assisted more than 600,000 technicians to comply with 1990 Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment.