Car AC Low Air Flow Problems – Cabin Filter Or Expansion Valve?
Low air flow problems can be caused by a dirty cabin air filter, cold, tree leaves into the evaporator case or from the evaporator and icing. Not all cars have cabin air filter for the passenger compartment. Many drivers do not know that a cabin air filter can also be in their car, that, first, that the reason they go to year without change. If just a small airflow through the dash vents, the cabin air filter, if available should be reviewed. It is notbe unaware occasionally for auto technicians if a particular model, is equipped with a cabin filter. Therefore, if you have a low air flow, it is worth mentioning the possibility that an air filter could be the problem of auto technicians.
Oaks
If the car is routinely parked under a tree (especially oak leaves because she is small) there is a good chance that leaves can work entering the car's AC channel. It is a good idea to keepthe leaves are cleaned off the cowl area. The hood is located under the windshield wipers on. Leaves tend to remain slightly in this area. One of the problems that the air in the fresh air is input in this area. Often the leaves are reaching into the air-ventilation through the fresh air duct work.
Icing evaporator core?
When the car AC blows cold for a short period and then blows hot and a lowerAir is seen, the evaporator core can glaciation. Sometimes, if the expansion valve is not working properly, the evaporator is too cold. This leads to the formation of condensation on the evaporator icing at curbing the flow of air through the evaporator fins. The expansion valve is designed to keep the evaporator cold but above freezing. One indication of when this occurs is that the air conditioner for a few minutes off can be rotated (to melt the ice time) and then when itturned back to her work again for a few minutes until the ice again. Another cause of the icing of the evaporator may, if moisture in the system. If moisture is the problem of the A / C dryer may need to be changed and then the system can be evacuated and charged with a vacuum pump. The desiccant in the dryer with the evacuation will remove moisture from the AC refrigerant.
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