Why You Might Need To Replace Your A/C Condenser
Your ac condenser is, as explained above, is a mounted in front of the raditor on your vehicle. The a/c condenser uses the air that is drawn into the front of your vehicle to lower the temperature of the refrigerant below it's boiling point and turn it back into a liquid. If your ac condenser is failing it will be noticeable as the refrigerant does not cool and is stuck as a gas and this cycle can just blow nothing but hot air and create a lot of pressure to circulate and eventually could blow seals and wear down other other parts listed here. When troubleshooting what's wrong with any ac auto part, you want to check for leaks. Leaks will spell why a part may not be doing it's job to it's capabilities. Always check the hoses and seals that connect onto your ac condenser. It does not take much for a leak to destablize the ac system and cause the conversion of refrigerant from a gas to a liquid fail to happen due to leaks and eventually a depressurization problem. To check for leaks as mentioned before in many of these paragraphs is to use the soap water test on any seal or hose connecting to your ac condenser. There are some other scenarios that could cause your ac condenser to fail such as a previous car accident, or improper installation from a previous mechanic.
Why You Might Need To Replace Your A/C Compressor
The a/c compressor is a big air pump that is usually, ran from a belt located on the car's engine. The compressor takes in the refriegerant, as a vapor and compresses it. The gas heats up as it is compressed, resulting in heat and high pressure vapor. The compressor does not run all the time, so the pully on the front of it usually has a magnetic clutch that can be turned on and off as needed. Over time, the ac compressor clutch can go bad and that could cause your a/c system to totally fail. That magnetism is what causes the ac compressor to engage and that tends to happen on older used vehicles. As mentioned above you can see how repairing an a/c system is totally tricky and the only way to be sure whether your ac compressor is indeed the part that failed is to test it. You'll need a mechanic to tell perform that test. However, just remember that a/c systems are hard to troubleshoot because each part is handling a key part in how it transforms your refriegerant agent from a liquid to a gas, so we reccomend getting your car inspected.
This device is a basically a valve that lets the liquid pass at a lowered pressure and causing called a flash expansion, which reduces the temperature of the refrigerant and makes it neice and chilly. The goal of this again is to keep your refrigerant is mostly liquid with some vapors and is in a state of low pressure. This allows the the evaporator to do its job and essentially blows the cold air into the cabin and passing the high pressure freon aka refriegerant back to the ac compressor. So what could cause the expansion valve to fail? Well pressure really. Pressure is one of the more major issues that can plague and ac system. Pressure can cause wear and tear on valve seals and as mentioned below in common ac system failures is the down-turn in optimization of air pressure. This could be tough to troubleshoot, as you'll need to the soapy water test to look for air bubbles on any rubber seals to determine if a leaky valve is indeed causing a leak. That leak will result in not having the proper liquid refriegerant and vapor refriegerant
The accumlator handles the biggest problem to any a/c system, which is moisture in the a/c system. This poses a big problem and the accumalator is used to help keep most ac systems dry and it also acts as a reciever. When access refriegerant is not being used it sits in the reservoir. If the a/c accumulator is failing, it will be hard to notice, but not removing the moisture from the refrigerant can cause the optimization of a moving refrigerant from a gas to liquid. If you're looking to find the accumulator in the bay of your car, it's a round cylinder mounted.
The ac evaporator is the final device in the process of creating cool air inside the cabing of your automobile. This component is usually mounted under the dash and attached to a fan. As the cooled liquid/vapor mix runs through the evaporator, the fan blows air over the fins, which transfers warmth from the air to the refrigerant, which as mentioned then cools the cabin air. This is also the device that host the expansion valve which creates the mixture of vapor and liquid. That liquid is important to have in the flash expansion and as a result it returns back to the boiling point of a gas at low pressure. After this, the process of cooling starts over as the hot gas is returned back to the compressor, where the pressure is changed and sent through to the condensor for processing. Overtime the pressure can wear down valves and seals. Due to the failures the lack of stable pressure in the ac system will cause the process of cooling to ultimately fail. Again this is what makes troubleshooting an a/c system so difficult, there are many componets. From these major devices that handle refriegerant agent to seals, values, and hoses. But should the a/c evaporator's expansion valve fail, then you'll have hot air or semi-cool air passing through the cabin.
The first indication of a problem with the air conditioner is that it stops blowing cold air; obvisouly. The A/C system is meant to be completely sealed, and when problems airse, it is usually due to gas escaping from the system or contaminants getting into it.
#1 A/C System Leaks
The compressed gases in the A/C System require seals and valves as seen above. Ovetime they will degrade and this will spell or create a leak, as mentioned, leaks are no good for AC Systems and can cause a complete down-turn in the effectiveness of cold air. You can also have pinhole size holes in lines than can let pressure refrigerant to leak out. Even if it's a slow leak, eventually it will turn into a big one, even if you recharge the refrigerant. So never ignore leaks!!
#2 A/C Compressor Failure
Another likely cannidate of loss of proper air conditioning in your cabin will be connected to the ac compressor going out. Major leaks can lead to catastrophic problems, like compressor failures. This typically happens when the magnetic clutch on the compressor fails, which prevents the compressor from spinning and or the clutch fails to release and the compressor runs all the time.
#3 Pressure Problems
Most issues with A/C System can be diagnosed with the use of a set of gauges. The gauges read the pressure on both the high-and-low-pressure sides of the system. Most of the time, checking the low pressure side is enough to tell you if you need professional assistance.
#4 Unpleasant Odor
Since the air conditioning exchanges cold and hot air, condensation forms on the condenser located under the dash. This drips off and runs out of a drain located at the bottom of the box that holds the condenser. If the drain becomes clogged, it creates a cool, moist area for mold and other unpleasant-smelling things to grow.
#5 Clogged Filter
Newer cars may have a cabin filter to clean the air as it passes through the heater and A/C System. It is usually located under the dash on the passenger side or under a panel in the engine compartment. Tbe filter may become clogged, causing ordor or limited performance of the A/C and heater system.