what causes ac not to cool when the car is not moving and smoke to.blow out vent

The air conditioning system in your auto is designed to cool down the air in the motel of your vehicle to go along you comfortable on a hot day. It'southward something that we oftentimes take for granted until it's a hot day and your auto's A/C is not working. When you simply get hot air instead of cold air, it can exist frustrating and extremely uncomfortable. If your air conditioner blows warm air, it is important that you become it looked at every bit shortly as possible so you tin can keep driving in cool comfort. In this article, nosotros're going to look at how your Car's A/C creates the cold air so you tin more accurately diagnose what's going wrong.

How Does a Car's A/C Work?

Your machine'southward A/C system is ane that operates a petty differently than you might call up. Instead of really creating cool air, information technology instead removes the estrus and moisture from the air inside of your auto, leaving y'all with cooler feeling air. In technical terms, the cool air is created by blowing air from either outside your car, or from the cabin over cold coils. This cools down the air before it gets blown out of the ventilation system into your car to keep y'all comfy. Most systems are designed to accident very cold air, between 32 and 40 degrees! These cooling coils, called the evaporator, is where the actual cooling of the air happens. These coils are cooled by cold refrigerant flowing through them.

Nearly cars today use a refrigerant called R-134a which is a special refrigerant designed to work at the temperatures and pressure standard in a automobile'south A/C system.  As the cold refrigerant passes through the evaporator it absorbs the rut in the air which warms up the refrigerant.  This warmer refrigerant now needs to exist cooled back down and so your A/C system tin can continue to operate.  This is accomplished by first compressing the refrigerant to a high pressure level which also heats it up to a loftier temperature.

This hot refrigerant is then cooled downwardly by running it through the condenser.  The condenser is cooled by ambient air in the front of your car merely similar the coolant in the radiator is cooled.  On most cars the condenser is actually in forepart of the radiator and gets cooled first to make sure your A/C organization gives y'all consistently absurd air.  This loftier pressure, now cooled, refrigerant is and then allowed to expand quickly every bit it passes through an orifice or expansion valve.  The expansion valve is a unproblematic device that takes advantage of the fact that quickly expanding liquids and gases get cold.  The process of liquids and gases getting common cold during expansion is a scientific miracle you can prove by using an entire can of spray paint in one sitting and seeing how cold the can gets.

Now the cold, low-force per unit area refrigerant tin return to the evaporator to cool it and forth with it, more than air keeping your car comfortable.  There are a few other components in the system like temperature and pressure sensors, hoses and the dryer or accumulator.  The dryer is where any wet is removed from the refrigerant, the refrigerant is filtered to make sure it all enters the compressor as a gas, and the oil for the organisation is every bit distributed through the refrigerant passing through.

Common A/C Bug & How to Prepare Them

If your car'south air conditioner isn't working properly and is blowing hot air so one of these systems isn't doing its job properly. Getting to the root of the trouble tin take some time and attempt, but we have simplified the process by providing you with the most mutual A/C problems along with how to resolve these problems once they're discovered.

The Evaporator or Condenser is Clogged

Since there are two components that require air to exist moving through them, the evaporator and the condenser, it is possible one or both of these are chock-full and not getting the proper air period.  Check the front of your vehicle for debris, the engine cooling fans for proper operation, and your cabin air filter for debris and clay.  The refrigerant in your system also needs to be able to flow properly through the system.  Check your compressor for proper operation, clogs in your organisation and the proper amount of refrigerant.  All of these tin can be checked past observing the pressures around the arrangement both before and later on the compressor and all the other components.  This can exist done with prepare of A/C gauges to measure out both the high and low pressure sides of your A/C system.

If y'all observe unusually high pressure earlier any particular components and unexpectedly low pressures after them, there is a good chance there is a clog in that component.  If this is the case, you volition most probable notice the clog in the accumulator or the condenser.  If you don't have a big enough pressure increase across your compressor you may exist in need of a new AC compressor.  If you lot accept lower than expected pressures on the low force per unit area side of your system, may only have a low refrigerant level.

Electrical Organisation Issues

Let'south go along it simple since your A/C system is very complex. At that place are then many dissimilar wires, fuses, force per unit area switches, and more that all work together to offset blowing cold air into your automobile. Therefore, if merely one of these components stop functioning, it is very likely that your entire system will shut down. For a novice, the place to offset here is by doing a visual inspection of the wiring to encounter if in that location are any that are damaged or frayed. Repair or supersede any damaged wires if you lot can find them, if not, you may accept to accept the auto to your dealer or a mechanic who will take the expertise to diagnose the specific issue.

The A/C System Needs Recharging

If you do not accept enough refrigerant in your automobile's A/C organization the compressor may not exist able to raise the system pressure high enough for the expansion valve to exist effective in cooling down the refrigerant.  Due to the loftier pressures of your air conditioning system and the volatile nature of the R-134a refrigerant used, it is non uncommon for some of the refrigerant to leak out over fourth dimension causing a depression pressure status in your system.  If yous discover this to be the reason why your car air conditioner is blowing hot air add Blood-red Angel A/C Terminate Leak to your vehicle'southward air conditioning arrangement to seal any leaks no thing how small they are before you recharge the arrangement.

Red Affections A/C Stop Leak 1 Shot comes in an piece of cake to use aerosol can that tin be installed rapidly and easily without any tools and also contains 2.5 ounces of R-134a to aid bring your system back up to normal operating pressure.

To acquire more about Red Angel A/C Stop Leak Aerosol visit our production data page hither: A/C Stop Leak Aerosol

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car_ac.jpg – By Marker Coffey – Licensed past Artistic Commons – Original Link
cabin_air_filter.jpg – past Donar Reiskoffer – Licensed By Creative Commons Via Wikimedia – Orginal Link

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