This will immediately cause the blower to stop working. Ask Your Own Hyundai Question. If no leaks are found, a system check and recharge may cost only around $100. It will be working fine,driving along and then will stop cooling.If you then speed up,it can start to cool again. The main issues that occur with the car’s air conditioning system are due to poor maintenance. My cars ac drains heavily, sometimes inside the car if its been on, theres high low-side pressure and poor cooling It sounds like you may have a faulty AC Compressor or potentially a leak in the AC lines somewhere. The 2006 Honda Civic has 4 problems reported for ac stops working intermittently. It's very confusing Thanks again Neil Any number of things could cause a single part or the whole unit to stop working, as you can see from the 10 examples I listed in the article. Compressor works for only a few minutes on cold starts, then stops working. ... Before you start doing repairs on the system it's a good idea to see how the a/c system works. Then you leave the car in the driveway overnight, and go out the next day and actually believe it might be OK, like it just needed a little rest so it could become air conditioning again. My 2001 SAAB 93 has this weird problem. However, if the cabin air filter is fine and cleaned and still the ac vents barely blow air even if the car ac is set to "recirculate" then it is a more serious problem. The range of pressure between the air compressor stopping and then starting is in the 20 – 30 PSI area. If you’ve ever sat stranded in an endless traffic jam baking away on a 100-degree summer day without air conditioning, you’ll agree that a functional AC system is essential. © 2021 CarGurus, Inc., All Rights Reserved. In the words of many repairmen, an AC compressor is the heart of an AC system. Over the last ten years more and more features have been added that make automotive air conditioning … A small refrigerant leak is the most common reason a car’s A/C gradually … Having your system serviced at the first signs of a problem can reduce the risk, although it’s not cheap: Replacing the compressor and flushing the system can cost over $1,000. Older cars might also have issues with the compressor. If this isn’t the case, the next car air conditioning troubleshooting tip is to see if there are any leaks. what pins are used in the relay to jumpstart you compresser clutch, to test it. My heater/AC fan quits blowing intermittently, then sometimes comes back on when I hit a bump . Lines, valves, and sensors run throughout the vehicle, connecting everything. What to Do When Your Car’s Air Conditioner Stops Working by Paul Gaylo CarGurus https://www.cargurus.com If you’ve ever sat stranded in an endless traffic jam baking away on a 100-degree summer day without air conditioning, you’ll agree that a functional AC system is essential. The AC repair market is competitive in most areas of the country, and the effort of shopping around can lead to a smaller bill. Even if you stay on top of routine maintenance, older cars are more likely to suffer from leaks due to their long exposure to heat, vibration, and general wear and tear. Checking the Ignition Switch. Pair of typical pressure switches for different types of compressors. Common Reasons a Car Starts Then Shuts Off. The DIY recharge kits found at auto parts stores may help in the short term, but improper service could damage the system or mask a serious problem, leading to a more expensive repair. When the car is moving, versus stopped, there is more air flow over the condenser (the heat exchanger in front of the radiator) and that airflow is essential to system operation. Welcome to the North American Subaru Impreza Owners Club ... the car is warming up properly... to the middle of the gauge. Circuit Breaker Tripping. It seems to do it more on very hot days. I've noticed that generally on the second or third try (say half an hour) it starts and often keep on cooling very well. Grandson went to wreckers - bought a part for 20.00 - problem solved. we bought the kit and guage and filled it. 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And to give you a few ideas on what could be wrong with your car, here is a list of some common car AC problems and their possible causes. If your AC system is low on refrigerant, a technician will add new refrigerant and check for leaks using a specialized sensor. But in most cases, it’s safe to continue driving your car in the short term while seeking multiple estimates. For a better experience, please enable JavaScript in your browser before proceeding. Sound about right actually. Road salt has a degrading effect on AC systems. I drive a Volvo S40, 2006 with 45K miles. If you’re only replacing the compressor and it’s repeatedly having issues then I’d guess another part, like the capacitor, may be failing and causing widespread issues. What's wrong if your car ac works for a few minutes then the compressor stops running and if you shut it off and then turn it back on it works for a few more minutes? All the time. First: Avoid the temptation to service your own AC. … If your car AC blows cold then warm, the cause can be a low system charge, moisture in the system, a malfunctioning expansion valve, clogged evaporator fins or an overcharge condition. I brought it to the dealer and they said the compressor is shouting off and needs to be replaced. The more miles you have on your car, the more wear and tear the compressor’s components have experienced. Usually it is located in the plastic duct work in the car behind the glove box. The blower motor resistor or blower module gets hot as it powers the fan so, often times, they can burn out causing certain speeds of the fan in your car to stop working, the fan can be stuck on one speed, only work on high speed, or not work on any settings. I turn it on it blows cold & hard then it just stops blowing, the front AC only, the back keeps blowing fine then the front kicks on again then off again. thanks in advance. The Ac seems to work at temperatures from 70-85 degrees out it works good then once it hits in the 90s the compressor quits turning getting hot air. is there a leak? Please see our, What to Do When Your Car’s Air Conditioner Stops Working. A low system charge can cause the evaporator coil to so cold that it freezes the condensation on the … AC components are located throughout your car, and the complexity of the layout will vary by car model. Once the refrigerant has escaped, your AC system won’t be able to cool the air. Don’t let your AC system remain inoperable indefinitely, as it could deteriorate without refrigerant, further complicating the eventual repair. In simple terms, an AC compressor is a pump which creates the heat by putting the air conditioning refrigerant under extremely high pressure. Answer Save. AC compressor is an important part in the car’s air conditioning system. Failed Blower Motor - The blower motor is the heart of the blower and, as one might guess, it drives the blower wheel which in turn, blows air. Use the key to start the car and … I started the car and idled in the driveway for 10 minutes, letting it warm up to operating temp, and it was blowing warm air. Hyundai Mechanic: George H., Hyundai Technician replied 8 years ago. The air conditioner … The air conditioner won’t run properly unless your engine is running. The A/C on my moms 88 300SEL is ice cold for about 30 minutes of driving, then it stops and blows out warm musty air. This is the most common reason for why your car’s AC is not blowing cold air. Everything has worked fine since then. To maintain airflow when the car is in stop and go traffic, or is completely stopped, condenser fans will come on … Blowing cold today but warm tomorrow? Finally, always ask for written documentation from the AC technician that the problem is fixed—if the problem comes back, you want to be covered. My Check Engine Light’s On—What Do I Do Now? Everything has worked fine since then. AC randomly stops working 3 Answers. i have a 2000 Toyota, sienna, the ac was working super cool until something punctured the ac pipe under the car which supplies Freon to the back evaporator and all the gas leaked out. To maintain airflow when the car is in stop and go traffic, or is completely stopped, condenser fans will come on automatically. AC components are located throughout your car, and the complexity of the layout will vary by car model. But A/C is more than just comfort; it’s a safety issue too. W126 - A/C works for about 30 minutes, then stops. Air Conditioner works then stops then starts working again. The air conditioner works great when the car is not moving but within 50 -60 feet of moving it shuts off and blows hot air. The ecu was trying to start the fans when the a/c was on, it found it couldn't and switches the a/c off.......switches back on and tries to start the fans again, couldn't, switches back off and the cycle keeps repeating itself. For instance, the compressor may be attached to the engine, but the condenser could be near the radiator at the front of the car, and the evaporator is often behind the dashboard. It was 94 out yesterday and My AC would work and blow kinda cold air for a few minutes then turn to warm (outside air). Lines, valves, and sensors run throughout the vehicle, connecting everything. But does turn when the car is just started up. If something goes wrong, a little familiarity with your AC system will help you understand the severity of the problem when talking with your mechanic and can save you money on the repair. Asked by Wiki User 28 29 30 https://www.wiseautotools.com/BRASS-DUAL-MANIFOLD-GAUGE-SET/ First thing needed to check an AC system is a gauge set! The most common causes when car AC is not blowing cold air are an empty AC system, faulty air compressor, faulty AC pressure switch, and a clogged cabin filter. exchange the AC electronic control unit (ECU) with a new one if not any of the above steps is working; Conclusion. JavaScript is disabled. The best advice to ensure getting a fair price on an AC repair is to comparison shop—always get several estimates. Maintenance/Repairs. Answer: The A/C and engine coolant systems are linked by the radiator and condensor which both sit … After 5hrs of the car being parked I turned it on and the AC came back. CarComplaints.com : Car complaints, car problems and defect information With little or no use during a long winter, the air conditioning system may have problems when re-engaged. Before You Begin. Show Less. There are many reasons why your car would start and then stop immediately. I've also noticed there is no fuse in the fuse box for the blower . A defective condenser fan. A Leak in the A/C System. Here is a more detailed list of the most common causes of a car AC not blowing cold air. The AC only works when the car is cool. At our Maryland auto repair shop, we help many customers with AC problems in summer. If this is the case, be sure to take it into a mechanic as quickly as you can. If your compressor stops at 120 PSI for example, it would typically start around the 90 PSI tank pressure level. If this is an A/C in a car then one possibility is evaporator icing, which I have experienced in two different cars. The filter was put in newer cars to filter out pollen, etc getting into your car. Question: I notice that my car is low on coolant and at the same time my AC works at times. Even if you still have cold air blowing, this noise could signal trouble with the air conditioner’s compressor. If it’s hot in a situation of car air conditioner blowing hot air , then it’s an engine problem. The A/C unit inside stops and starts at 1-2 second intervals only when it rains heavily, then after doing it several times goes back to normal. If this is an A/C in a car then one possibility is evaporator icing, which I have experienced in two different cars. or is it something else? The most common causes when car AC is not blowing cold air are an empty AC system, faulty air compressor, faulty AC pressure switch, and a clogged cabin filter. All the time. Another possible thing could be this air filter (cabin filter) is clogged. It's very confusing Thanks again Neil It takes just a moment to join our fantastic community. In this type of situation, it’s very likely that the head unit is still working, but there is some kind of intermittent break between it and the speakers. Both the pulley and the clutch should be spinning. Show More. Little to No Air is … By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Hex Auto Parts Common AC Compressor Problems Cool But Not Cold If the air conditioning is set to max cool and fans on high, but is only blowing moderately cool air: 1. The list goes on and on. Bring your car into a trusted dealership or repair shop to have your AC unit assessed as soon as possible. THANSEN1970 MEMBER; 2002 JEEP PATRIOT; 3.7L; 6 CYL; 4WD; AUTOMATIC; 125,000 MILES; About 2 weeks ago, the air started to get warm coming out of the vents. Identifying the Issue Start the vehicle and turn on the air conditioner. Often, the age of the AC system contributes to leaks. Today - as i stood with the car somewhere and let the engine run (idled) - i noticed strange noises from the front: The AC - compressor runs and stops after maybe 1 - 2 seconds. the blower is working because hot air is being shot out then it just goes cold It seems to do it more on very hot days. Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself. It serves one very fundamental purpose, as well, and that is to cool you down. my ac was blowing hot air so i decided to put in the freon. Today - as i stood with the car somewhere and let the engine run (idled) - i noticed strange noises from the front: The AC - compressor runs and stops after maybe 1 - 2 seconds. Share this conversation. There was nothing wrong with it at all before the first mechanic disconnected some stuff to deal with the crankshaft issue. My car ac works for a few minutes then it stops cooling and if i shut it off and then turn it back on it works for a few more minutes or sometimes it just works quite well. There are many other styles of pressure switches. A properly working air conditioner will drop the temperature in the vehicle on average 30-40 degrees cooler than the outside temperature. When the car is moving, versus stopped, there is more air flow over the condenser (the heat exchanger in front of the radiator) and that airflow is essential to system operation.