DenLorsTools.com Summary: Motor vehicle air conditioning questions answered from all over the world by a master air conditioning technician in Florida. Simple to understand terms are used to resolve issues and to help the reader understand problems with their car’s Air con system (A/C system). Low gas (refrigerant) is the most common problem a car’s aircon system could have, but it’s not always the issue. One shouldn’t assume that the solution is always to top-up (top off) a system. A re-gas that adds too much R134A only causes more problems. Many garages will do a free pressure check. However, simply checking the pressure readings is not a foolproof test of the air conditioning system’s health. But, a knowledgeable motor vehicle technician can make a good evaluation of the A/C’s performance based on the readings and a visual inspection of the components. After evaluation, a ragas (recharge) may be done or a more accurate fill of refrigerant can be performed by removing the remaining refrigerant, vacuuming the system down and recharging with the vehicle’s specified amount of gas.

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DenLorsTools.com Summary: Questions answered by a master tech, regarding a car’s AC system when the Freon just won’t leave the can. When the vehicle’s air conditioning system doesn’t accept a charge of refrigerant there can be many issues, or the problem could be solved easily. Understanding how the system works in easy to understand terms is the best place to start. This and other helpful A/C articles when it’s hot outside and it’s time to get the car’s air con working again.

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Image courtesy of the EPA

© DenLorsTools.com Summary: Article covering the new type of car A/C refrigerant refrigerant for cars to be produced by Dupont and Honeywell. It’s actually called HFO-1234yf to be used in automobiles in the near future. Many repair shop owners are asking the following questions; When will it be replacing 134A? Should I purchase a new 134A AC machine, or wait? Are there any other tools needed to help prevent contamination when handling this new refrigerant? Will the new Freon be a “drop in” replacement? These questions and more are answered regarding R1234 (HFO-1234yf) which is the replacement refrigerant for R-134A.

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This picture shows some side dash bolts with trim removed.

© DenLorsTools.com Summary: Common cause of 2002-2005 (Third Generation) Ford Explorer and Mercury Mountaineer low airflow issues covered. Broken recirculate doors can affect airflow from the blower fan if the main air inlet door has fallen. A Ford Explorer that has a full charge of refrigerant and is cooling, but is not quite cool enough may have a broken fresh air door, preventing proper recirculation. The fresh air door is also called a recirculate door, max air door or main air inlet door.

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