This means that if there is mold, dust, animal dander or other people in the building have viruses or air-borne infections, individuals are more prone to be exposed and get sick. Remedy: Some systems are built to a low in a "leak" from the outside. You can create your own leak by cracking open a window even slightly. 4. The most common causes that hinders normal operation of air conditioning system on your Subaru Forester are dirty cabin air filter, refrigerant leak, dirty or clogged condenser, dirty or clogged evaporator, bad blower motor, defective compressor, faulty blend door actuator or any fault in the electrical system. 1. Dirty cabin air filter. 6988 Answers. SOURCE: adding freon to the auto air conditioner, the. On that model,it will cycle on and off while you add freon.If it does not ,then the ac system might have a problem.The low side pressure switch is located on,or near the accumulator .Unplug the switch and take the wire end plug and connect the two plug in`s together (cross it Pull back on the AC recharge kit connector collar, push the connector onto the port, then release the collar. Wiggle the connector to be sure it’s fully seated and doesn’t come off. Start the engine, open the windows and set the air conditioner to “max cold.”. If your kit includes temperature clips, insert these into the vents inside The A/C is blowing warm air: The first, and easiest, way to tell if your car’s A/C system needs a recharge is if it’s blowing warm air out of the in-cabin vents. Since the system operates by circulating the pressurized refrigerant, a lower amount of refrigerant will affect its performance. The A/C clutch is not engaging: When your car’s A In the Jan. 18, 2016, NEWS article, “ Climate Pacts Create Turbulence ,” Gordon McKinney, vice president and COO of Icor Intl., said, not only are leak-stop agents effective, they are also underrated contributors to air conditioning and refrigeration systems being tighter and more leak-free than ever before. “I know stop-leak additives 6. Low Refrigerant . Without refrigerant, your air conditioning system can't cool the air. Even a small refrigerant leak can drastically impact your air conditioner's ability to cool. Refrigerant works by flowing through the air conditioner's coils, where it repeatedly changes from liquid to gas and back again. This part is sized to handle a certain load of refrigerant based on the cooling capacity of your air conditioning unit. When this amount drops too low, your compressor will run into problems that may even lead to replacement. In fact, many parts of your unit may suffer from wear and tear when refrigerant is low. An air conditioner making a pulsating or rhythmic thumping noise isn’t necessarily a bad sign. This A/C noise can be perfectly normal when the air conditioner is operating. However, if your outside A/C unit is making a loud noise like thumping that you can hear inside the house, it could signify that something has come loose inside the unit. Pressure Low: 33. Pressure High: 174. Country of Origin: United States. I am now completely confused with what I thought I knew. I converted one car over to R-134a, and replaced the compressor and accumulator on another. Used 2 can of this in each vehicle. Both still blowing cold air to this day. 88ebc.