What is wrong with My Car Air Conditioning ?

There is nothing worse than jumping into a car on a hot summer day only to discover that the air conditioning unit has stopped working. There are a number of reasons why this might happen. For example, there may be a lack of refrigerant in the air cooling system. If refrigerant is present, it may slip past a leaky compressor or O-ring break. A leak may be present somewhere along the evaporator or condenser lines.

Air conditioning systems fail to function properly when refrigerant levels are low. This is attributed to an internal low pressure safety switch that stops a compressor clutch from engaging with the cooling process. Shutting down is a simple protection mechanism that prevents damage to the compressor from lack of fluids.

Car air conditioning problems mainly start with the compressor. This can be thought of as the central hub of an air conditioning unit. When problems occur here, chances are the entire air conditioning unit will fail to properly function.

Compressor clutch disengagement signifies a problem with a blown fuse or wiring problem. For a blown fuse, replacement or repair will temporarily solve the problem. A permanent solution requires identifying where the fuse blew and how it can be repaired. When the air conditioning unit is switched on, it is easy to see whether or not the compressor clutch is engaging and cooling down the vehicle.

Another possible reason for the compressor not engaging is a magnetic clutch receiving voltage but not passing it along to the compressor. In this case, the entire compressor needs to be replaced. Leakage from the compressor shaft indicates a bad seal. That needs to be replaced.

When the compressor lets out an annoying high pitched sound when the air conditioning is turned on, the clutch can not turn the compressor on. This spells the end of the road for the compressor and it will need to be replaced.

One of the main reasons compressors fail is an absence of lubrication. Numerous causes are behind this. There may be low refrigerant levels in the system. Something may be blocking the pathway preventing refrigerant and oil from reaching the compressor. Routine maintenance oversights may also be to blame. Failing to add oil to make up for the loss of lubrication or using the wrong type of oil is just a few examples.

There are two different types of air condition compressor units. The first one, R-12 requires mineral oil to function properly. The second one, R-134a utilizes POE oil to run. Using the wrong type of oil in a compressor unit can cause everything to come to a screeching halt. This will block the unit from functioning properly.

These are just a few examples of the things that can prevent a compressor from functioning properly. All are easily fixed with a trip to the local mechanic or auto body shop. Only skilled individuals familiar with car air conditioning units should attempt to correct any one of these issues on their own. It is no fun to travel around in a vehicle with no air conditioning.


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