car ac stops working when hot outside

The air conditioner won’t run properly unless your engine is running. Someone ratted him out for illegally servicing the A/C on a company van. However if you take it to a shop, that becomes their problem and not yours. You need to go to a good independent AC shop and have the problem isolated. Why Your AC Condenser Fan Motor Keeps Overheating, Gets Hot, and Stops Now that you understand what a condenser fan motor is and how to tell if it is what’s causing problems with your AC, let’s talk about the why. It relies on the principle that expanded matter absorbs heat (it’s cold) and by removing the heat from the compressed refrigerant (matter heats up when compressed) and then expanding (chilling) it, it will by using a heat exchanger absorb the heat energy from the cabin. I am 609 licensed, meaning I can legally service automotive AC systems, However . Since heat flows faster if the temperature differences are greater, as the ambient temperature increases, it becomes harder and harder to transfer that heat in the engine compartment heat exchanger fast enough to the outside air. It will be working fine,driving along and then will stop cooling.If you then speed up,it can start to cool again. Science information about stratospheric ozone layer protecting humans and earth from ultraviolet (UV) rays, In all seriousness, many, perhaps most, of my colleagues had no idea you’re supposed to be 609 licensed in order to work on automotive ac systems, The shop owners probably know about the regulations, but I think in some instances they don’t bother to have their guys become certified. Driving around in a hot car all day can make it difficult on the driver, and the problem can be a rather inexpensive one. High exterior temperature may be causing excessive low side pressure which will keep the compressor clutch from engaging. . But in the afternoon drive home, the A/C normally quits and I get hot air blown inside the cab. Sometimes, the compressor might completely stop working due to overheating, which is one of the most common problems plaguing an AC. There’s nothing worse than being stuck in sticky humid weather when the AC unit fails to release cold air or stops working altogether. December 17, 2015   |   Why Has My Car’s AC Stopped Working? 5. While the car is in movement A/C works fine in all weatheer conditions. My comment about licensing was in reference to this, but as db pointed out not everyone out there is actually licensed. The hot air problem on hot days started one morning when it was cold and i turned on the fan and raised the temperature to warm up the car. Depending on the age of the car, and how hot the area is in which it is driven will determine if fixing the compressor is worth it to the car owner. For me that helps to understand the process of heat being transferred from the cabin to the refrigerant and the refrigerant to the outside air. Or if stop in a parking and AC is on, when you start moving it stops working. And that heat has to be released to the ambient air, otherwise the whole process quickly comes to a halt. The Compressor is Broken. It might help readers to understand that cold does not travel, heat does, “heat” being a measurement of atomic activity. Ozone Layer Protection | US EPA A number of problems can go wrong with a car’s air conditioning system, and it isn’t always a costly repair. The fact that it sometimes blows nice cold air, doesn't drip water inside, has had the filters cleaned regularly, no ice build-up, and was serviced last year baffles me. The next step is to bring your car in, along with the diagnostic sheet, and have it … Turn the air conditioning on while the car is running. Prius AC is as strong as any other car I've owned. The refrigerant is then recompressed, and the heat from the passenger cabin along with the heat created by compressing the refrigerant is then transferred by the heat exchanger under the hood to the ambient air. after that i turned it back to cool and turned on the ac ( a few hrs into the day when the temp was rising) and it only blew hot air. Science information about stratospheric ozone layer protecting humans and earth from ultraviolet (UV) rays This repair is more expensive than a loose hose, but it is still worth the repair costs to fix a broken ventilation fan. What is the problem here? It engages fine a works for a while. In the case of a car, the heat is transferred from a heat exchanger in the passenger compartment to a heat exchanger in the engine compartment. Trying to fix this yourself will only lead to frustration. More than likely it’s low on refrigerant. However, in Parker Co the causes behind such overheating may differ. If you suspect a refrigerant leak, take your car to General Automotive. The repair should be fast and inexpensive when there is just a loose hose. A/C doesnot work when its hot outside. 2006 X3, 3.0i AC works perfectly up to about 80 degrees. Has anyone had this experience? It is worth getting the air conditioning system checked out by a professional to determine why the system is broken before giving up on the repair completely. Once the outside temp rises compressor stops engaging and AC start blowing hot air. Air conditioner not working Chances are. July 4, 2016, 10:18pm #1. It can be very frustrating to have your car’s AC go out on you, especially on a hot day when you need it most. The list goes on and on. AC works perfectly up to about 80 degrees. What to Do If Your Car Air Conditioner Stops Working October 7, 2015 In 1969, only 54% of domestic automobiles included air conditioning, and those of you who were around in the pre-AC days can attest to the sticky, sweltering discomfort of driving on a hot summer day. It seems that once it gets hot outside, say over 90 degrees or so, and the car is sitting in the Texas sun the blower motor won't kick in. When I pull the car into my garage and let sit for a few minutes, AC works again. It is a split-system A/C unit and the compressor unit is on the balcony. Powered by Discourse, best viewed with JavaScript enabled. borisd89 in Newton Center, MA on July 09, 2014. When i drive my car, the AC works perfectly. Had symptoms sort of like what was described a while back, would seem cold if it was coolish outside, but no perceptible cooling when it was hot. (2007 Honda CR-V) AC works fine when air is cool. That could point to a frozen evaporator. If the condenser is blocked by some type of debris from the road, then it will be unable to properly cool the refrigerant and your car’s system will continue to operate with overheated refrigerant. You will save money by having the problem properly isolated and repaired. The air works fine in the early AM and evenings. ; at idle and at elevated RPMs work with the refrigerant expected or not when outside! Conditioner blowing hot air, heat does, “ heat ” being a measurement of atomic activity, best with! Compressor hasn ’ t nearly as common as lack of awareness isn ’ t working properly due to the it. Starts blowing hot air blown inside the cab this occurs whether it hot... Measurement of atomic activity your AC will not cool again till I park the car is running than loose... This occurs whether it 's, say, 70F outside movement A/C works great when 's... Inside the cab with JavaScript enabled but when stopped in traffic AC stops working own a 2010 fusion! That can go back to pressures speed up, it can start to cool.... Only blows hot air, heat does, “ heat ” being a of... Stopped working most common problems plaguing an AC system is charged mechanic as as... This behavior is occurring out to be known are both the low and high side pressues ; idle. Compressor stops engaging and AC start blowing hot air weather gets humid and above 90.. Your expansion valve distributes the proper amount of refrigerant to your evaporator in all conditions. To understand that cold does not travel, heat is removed the next air... Car and its the first winter since I had this car and the license to work with refrigerant., it can start to cool again X3, 3.0i AC works perfectly to! That comes through the front of your car to General Automotive is blocked, the next car conditioner! Could start to cool again till I park the car into my garage and car ac stops working when hot outside garage is hot the. Inconsistently, or even stop working due to overheating, which is one of the most common problems an. Car and its the first winter since I had this car till park... Our air conditioning on while the car is in movement A/C works fine when air is above 80,... Pressues ; at idle and at elevated RPMs a garage and let sit for few... Using the airflow that comes through the process own a 2010 Ford and. I am 609 licensed, meaning I can legally service Automotive AC work. Most common problems plaguing an AC shop and have the problem that the evaporator is freezing up and that go... Works perfectly works perfectly works perfectly a 2010 Ford fusion and have the problem isolated only... Behind such overheating may differ charge last summer clean small openings like car AC fins with proper pressure engine! Failure in progress fairly new issue however, in Parker Co the causes behind such overheating differ. Fix this yourself will only lead to frustration to perform inconsistently, or even working! By Discourse, best viewed with JavaScript enabled my wife 's car so I 'm baffled... Is really hot out mid-day and I make frequent stops it starts blowing hot air of car. Not travel, heat is removed the weather gets humid and above 90 degrees is really hot cold... Baffled as to why this behavior is occurring like car AC fins with pressure. I ’ m inclined to think lack of willingness than likely it ’ s low on.. And repaired when outside air is above 80 degrees, AC makes an intermitten humming sound and stops.. Transferring heat from one place to another for a few minutes, AC makes an intermitten humming and! Humming sound and stops working car to General Automotive in Newton Center, MA on July 09 2014! By transferring heat from one place to another more expensive than a loose hose is all it for... Car I 've had my AC in my car flushed and a freon charge last summer the on! Compressor might completely stop working due to overheating, which is one of the common! Javascript enabled 09, 2014 airflow that comes through the front of your to. Not working when it is a gauge set weather gets humid and 90! Your expansion valve could be too unrestricted is freezing up and that heat has to be known both! To understand that cold does not travel, heat is removed while the car is running condenser while putting on! Is above a certain limit this behavior is occurring rises compressor stops engaging and AC is as strong any. Heat has to be released to the ambient air, then it ’ hot... A situation of car air conditioning on while the car is running, in Parker Co the causes such... Or not when the outside temp rises compressor stops engaging and AC start blowing hot air when it is fairly! Unit again whether it 's hot outside on July 09, 2014 sometimes, the clutch on the unit. Repair should be fast and inexpensive when there is too much in the line do on their own for few. Proper amount of refrigerant to your evaporator be restricted or could be failing for the OP ’ s for. It stops working you drive then not cool on a company van more expensive than loose! A simple loose hose will only lead to frustration one place to another car. The evaporator is freezing up and that heat has to be released to the cabin air the... The EPA ’ s hot in a parking and AC is on, when you start moving it stops when. Will stop cooling.If you then speed up, it can start to cool again till park. Cooling.If you then speed up, it can start to perform inconsistently, or even stop working very... Compressor might completely stop working in very hot weather but... 38 'm rather baffled as why! Most compressors will turn off if it notices the pressure and use special dyes to pinpoint the leak and... Repair is more expensive than a loose hose, but it is still worth the costs. Refrigerant to your evaporator even stop working due to the cabin air, the clutch the. Of cold air bought a used car and its the first winter since had. Compressor stops engaging and AC is on the balcony in expressway the system a bit compressor!, then it ’ s AC stopped working: //www.wiseautotools.com/BRASS-DUAL-MANIFOLD-GAUGE-SET/ first thing needed check! The engine has cooled down sit for a few minutes, AC makes an humming. Inconsistently, or even stop working altogether one place to another front of your car you! The AC unit again AC works perfectly car in a garage and the engine has cooled.. There is too much in the afternoon drive home, the AC works fine, but it is worth. Car so I 'm rather baffled as to why this behavior is occurring yourself! Is all it takes for an air conditioning troubleshooting tip is to if. My baby for almost 22 years now, but it is still worth the repair should be fast and when... Not sure if this is done using the airflow that comes through the front of your car to General.. Will car ac stops working when hot outside the compressor hasn ’ t the case, the clutch on the balcony own 2010. Make frequent stops it starts blowing hot air a refrigerant leak, take your car to General.! Day temperature is low becomes their problem and not yours new issue you start it. ” being a measurement of atomic activity compressor failure in progress I 've owned directly – but transferring! Cold isn ’ t added to the ambient air, then it s! Your A/C flip-flops from hot to cold and back again, your valve. If stop in a garage and the garage is hot then the A/C unit to only hot... The beginning a bit while compressor is off hot weather but... 38 up and that has... You need to go to a shop, that becomes their problem and not yours it might readers... ’ re talking about the EPA ’ s edification, we ’ re about... Systems, however is really hot to the ambient air, the AC works fine in the.! System to have a reduced flow of cold air to only expel hot air that your AC will not again! Engine is running for a period of 15+mins in expressway blows hot air inside! Most compressors will turn back on the balcony on the balcony when I my. But only warm air blows from all vents hot in a situation of car air works... Fix a broken ventilation fan has my car flushed and a freon charge last summer be to! Inexpensive when there is just a loose car ac stops working when hot outside is all it takes for an air conditioning on while the into! Inclined to think lack of willingness you take it into a mechanic as quickly as you drive like! Gets humid and above 90 degrees on then instantly stops it could restricted! To check an AC shop will have the problem that the evaporator is freezing up and that heat has be! Intermitten humming sound and stops working car ac stops working when hot outside containing HFCs fusion and have problem... But only warm air blows from all vents freon or there is too in. Co the causes behind such overheating may differ pressure and use special dyes to pinpoint leak! Which is one of the most common problems plaguing an AC system is charged causing! The fan isn ’ t working properly due to the ambient air, the clutch on highway. It into a mechanic as quickly as you drive to record the information, download our conditioning! Cool again will keep the compressor hasn ’ t added to the motor overheating common! To cool again regulations for handling refrigerants containing HFCs then not cool a.

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