AC compressor is not quickly cooling?

the AC compressor is not running quickly when i start the car
My car has an automatic transmission. this is not happening in the hot weather. it is happening when the weather is not much hot.
Experienced mechanics share their insights in answering this question :
Hi there. Assuming, the a/c is not blowing cold right away, this could be an indication the refrigerant level is low. An air conditioning system service could resolve the issue, as long as there are no leaks in the system. If, the a/c system is fully charged and there is a delayed compressor engagement. It could be, caused by any number of faulty electrical components in the a/c system, ie; low pressure switch, compressor relay, high pressure transducer, body control module, engine control module, etc. etc. etc…. I recommend having your vehicle’s slow to operate a/c compressor be diagnosed and repaired by a certified technician, such as one from YourMechanic.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

Perhaps the most common cause of AC issues is clogged filters. Dirt, pet hair, pollen and dust can clog your filters. When filters get clogged, they begin to restrict the flow of air through your AC. The result is that the AC doesn`t cool your indoor air effectively.
If your car air conditioner takes a long to cool, there could be a coolant leak inside your AC unit, an open heat coolant valve, a faulty air compressor, an electric problem with your climate control system, a clogged air filter, or loose air flaps.
The most common reasons a Chevrolet Silverado 1500 ac isn`t working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. You may not realize there`s a refrigerant leak until the air conditioner stops blowing cold.
If your air conditioner only stays on for a few minutes at a time and shuts off before it has a chance to cool your home, this is called short-cycling. The issue is relativity common and can have a range of causes, from a clogged air filter to an oversized system.
Odds are good that the fan switch may be at fault, but a more likely reason is that a blower motor resistor that controls the voltage going to the blower has packed it in, resulting in only one speed remaining operable — usually the highest speed, which you may not always need depending on the temp of the outside air.
Appliances such as air-conditioning and refrigeration units are particularly vulnerable to damage caused by low voltage `brownouts`. High and low voltage can seriously damage your appliances, resulting in you having to repair or replace them which can be very costly.
Pump out more hot air

You can make the hot air escape by simply rolling the windows down and start driving. Don`t just open the front windows as it won`t let the rear side of the cabin cool down. Open all the windows of your car and let the hot air, flow. The hot air will escape and a nice airflow will be created.

The fan is what blows air in and out of your home`s vents. Lots of things can cause your blower to have trouble, especially if it gets too dirty. A fan clogged by dirt, a stuck wheel, broken motor, or a loose fan belt are all common problems that reduce the amount of airflow you feel coming from your vents.
The short answer is that your AC compressor and refrigerant should last about 12-15 years. Learning what crucial components, and how to maintain the compressor, can keep your AC running efficiently for its entire lifespan.
If there`s something wrong with your air conditioner that makes it shut off after just 15 minutes, it`s usually one of these issues: Unit is overheating: This often means there is simply a buildup of grime inside the compressor unit, but it could also mean there`s a refrigerant leak or another problem.
The most common causes of broken air conditioning leaks or compression issues. If you are feeling cool — but not cold — air, the issue could be a clogged filter, a problem with the cooling fan, signs of radiator trouble, or it could simply mean it`s time to recharge your AC.
So, if your air conditioner isn`t cooling, and you suspect a refrigerant leak, or if you`ve checked the air filter and thermostat to no avail, yes, you should shut your air conditioner off and call us right away.
So, if your air conditioner isn`t cooling, and you suspect a refrigerant leak, or if you`ve checked the air filter and thermostat to no avail, yes, you should shut your air conditioner off and call us right away.
So, if your air conditioner isn`t cooling, and you suspect a refrigerant leak, or if you`ve checked the air filter and thermostat to no avail, yes, you should shut your air conditioner off and call us right away.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

when I turn my ac on my cars idle drop and stalls out and the ac is hot
ANSWER : Hello, thank you for writing in. Although the pulley is still spinning, the compressor has likely failed. If it is not properly regulating pressure in the system, one of the first signs is a warm air conditioner. Considering yours is not cooling off, the pressures are not correct. If you believe the compressor is working correctly, you may want to check for a clogged line before replacing it. Keep in mind, a blocked line has likely put extra strain on the compressor, and may cause premature failure. For more help with testing or replacing the compressor, contact our service department to schedule an appointment.

Ac not cooling properly.
ANSWER : Hello. Thanks for writing in about your 2005 Toyota 4Runner. You could try purchasing another thermometer to check the level, but the system’s instruments don’t typically give false readings. The conditions outside can affect the operation of the system as well. The recirculation option takes air from inside the vehicle and pushes it through the air conditioning system a second time, and this process will generally provide a bit of extra cooling.

One option can be to have the system evacuated of refrigerant and held under a vacuum for a couple of hours to boil out any moisture, as water will begin to boil once you remove atmospheric pressure.

After this time, the system can be refilled and new oil added. If your vehicle has a cabin air filter, try checking to see if it’s dirty and blocking air flow to the AC system in-cabin fan. If you want to have a professional diagnose the AC system before making any adjustments or repairs, a certified technician from YourMechanic can come to your home or office to perform this service.

What would cause the clutch on an ac compressor to continue to go bad after being replaced three times?
ANSWER : The compressor clutch relay on these vehicles are a known cause of sticking on the compressor clutch and overheating the A/C compressor clutch coil. Replace the A/C relay to see if it cures the clutch going bad the next time you do a compressor clutch replacement, or replace it now if you have just replaced the clutch.

Car cabin smells of AC refrigerant at times and now the AC is not cooling after about a month of filling it .
ANSWER : If you have detected a refrigerant and oil mist in the cabin, then an evaporator "area" leak is likely. However, any time there is one leak, the entire system should be pressurized (whether pre or post repair) and tested for leaks in order to ensure trouble free operation. To request diagnosis and repair of your system, please use YourMechanic’s a/c diagnostic service page and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

White foggy smoke getting out of my AC vent
ANSWER : Hi, thanks for writing in. I’d be happy to provide my thoughts on this. The first problem is that the connections the mechanic did is not allowing the AC to cycle out normally and will cause an over pressure of system and it freezes the evaporator. I recommend having the system properly diagnosed to find out the real reason the compressor will not come on. Most likely the AC compressor module is bad and needs to be replaced.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

2008 VW Jetta AC not cold
ANSWER : Hi Allen. By far the best way to have your AC system correctly diagnosed is by having an AC inspection completed first. By having one of our professional mobile mechanics come to your location to diagnose the issue correctly, it significantly minimizes the mistakes in completing the wrong service. In your case, the issue could be as simple as needing to have the AC system recharged, or there is an existing leak that needs to be repaired before refilling the refrigerant. Best economic bet is to have the AC inspection completed first.

Hi Shaun! Can you help me determine whether my mechanic was being legit re: my AC issue?
ANSWER : Hello, thanks for writing in about your Kia Rondo. Unfortunately we can’t confirm whether your mechanic is being legit because we don’t know the complete conversation between you and the mechanic. Shops have their own prices for their services. You may have to shop around to find out if another shop will do it for a better price. If you’d like a second opinion on the quote I would suggest having one of our technicians diagnose the issue with your A/C for an accurate repair.

2005 Toyota Corolla AC Compressor Not Cycling On & Off
ANSWER : Hi there. If the AC compressor is not cycling on and off as usual, it’s due to an internal component failure in most cases and would need to be replaced. If the compressor fails, it typically does not cause damage to other AC system components. It is possible that there is excessive debris inside the compressor or the bearings internal are worn out. The best thing for you to do is either have the AC compressor replaced, or make sure that the compressor is not blocked by any debris and is getting air from the outside of the vehicle.