WRONG! However, if you find that the cooling effect is missing, you should go on troubleshooting. In most cases, their diagrams are right from the factory manuals. Turn the air conditioning on while the car is running. The first culprit of your car air-conditioning not giving off cold air when the car idling is the lack of air flow in the condenser. Problem #1: Refrigerant leak Refrigerant is the liquid/gas responsible for absorbing heat from your home’s air. If your air conditioner doesn't blow cold air it could be because the filter compartment is dirty or stuck. An electronic leak detector is the best way to check for leaks. If you’re tracking down a wiring issue, Eautorepair.net is the better choice. Troubleshoot these common car air conditioning system problems. Leave it here, Check to see that the cooling fans on the condenser or. 2. Check where the evaporator drains condensation with UV light. Do not wear ties or loose clothing when working on your vehicle. When the car is already overheated and the fans in the radiator and condenser are not properly working for some reason, the system can’t cool down the heat with the maximum efficiency. The most common causes of broken air conditioning are leaks or compressor issues. At this point, the only fix is to open the system, flush the lines, replace the orifice tube/expansion valve, receiver/drier or accumulator, condenser and pull a vacuum for at least 45 minutes to pull all moisture from the system. Your brake pads and rotors help your vehicle make safe stops, so it's important to replace them when necessary. Use this guide to help you get started replacing brake pads and rotors. This happens most often in the winter when the seals and tubes contract. If the air is warm to cool, but not cold as it should be, there may be an issue with air flow. I mean, my car ac blows cool but not ice cold. Information is accurate and true to the best of AutoZone’s knowledge, however, there may be omissions, errors or mistakes. Having your car’s air conditioning go out suddenly can ruin your day fast. Air flowing across the AC condenser tubes cool the hot (gaseous) refrigerant that absorbed heat from inside the vehicle. The most obvious ways to improve the cooling is to get the AC gas refilled and get a new cabin filter. If that’s not what is causing it, check the engine’s condenser. But first, ensure the refrigerant levels are correct and the radiator/A/C Condenser fan(s) are working properly. Especially if is one of those days where putting down the windows just won’t cut it and help cool it off. Some of your A/C system’s parts, including your compressor, are electrical. Give attention to the AC evaporator box water drain tube. When you turn on the car AC, you expect it to blow hot air for the first few minutes. Always wear gloves and safety glasses and other personal protection equipment, and work in a well-ventilated area. Keep the Freon can upright to only charge with gaseous Freon. With the engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor. Moisture is like poison to the internal system components and can damage the AC Compressor as well. It is important to check your car’s air conditioning system from time to time and make sure it is working properly. Sulfuric acid is caustic and can burn clothing and skin or cause blindness. The cooling fan in the condenser is the first thing that you should look into while finding out the reason for car air conditioner not blowing cold air when idling. There’s too many rambling answers on here. If there is voltage - the clutch may be bad. Get the BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. If there’s a restriction somewhere in the system, it blocks it all up and prevents the AC from blowing cold. See this post for static pressures at ambient temperatures. Over time, most car AC systems develop leaks and lose a small amount of refrigerant. Tap Freon can and open valve to begin charging. If your AC system is low on refrigerant, it won’t cool your home as well as it normally would. That saves a lot of time because you don’t have to refer back to the component locator or circuit locations. Remember, inspect and test before replacing! Buy the same color if you replace yours. While checking the AC Condenser, inspect the Radiator / AC cooling fan motor(s). It’s possible that the expansion valve that dispenses the correct amount of refrigerant to the evaporator has failed. Another common reason for car AC not blowing cold air when idle is an overheated engine. Fortunately, there are things that you can do if your air conditioner is not blowing cold air. 4-when I press the AC button the compressor engage without any proplem. You can save yourself some cold cash by learning how to fix your car’s AC. my AC is giving a cool air but not ice cold … If your AC is charged but not cold, read this. It’s located in front of the grille. Failing internal components caused by normal wear or low AC Oil levels caused by leaks. Depending on your vehicle, you may have an accumulator or a receiver/drier. The compressor of the AC system moves heat from the radiator to the condenser. Luckily, a small amount of basic maintenance and some quick inspections can get your car ready to drive through winter weather. Failed power supply to the AC clutch caused by a blown fuse, bad pressure control switch, dash control module or a broken circuit wire. Although an automotive AC system has few moving parts, diagnosing why your car is blowing warm air can be tricky. Common Problems: The number one cause of failure is a leak due to age and wear. Then, when summer arrives and the tubes and seals expand, it’s … If the clutch is not engaging and the system has refrigerant, use a. The compressor of the AC system moves heat from the radiator to the condenser. That air blows through the AC vents which you breathe inside the car. Air in the system causes pressures on the high side to be higher than normal and causes the gauge needle to flutter. It's not the Freon. This returns the refrigerant back to a liquid state where it will once again enter the evaporator core and absorb more heat from the interior. Problem: Air Conditioning Goes from Cold to Hot When you’re driving and the air suddenly goes from comfortably cool to horribly hot, you know there’s a problem. Leaking or Low Refrigerant Leaking or low refrigerant is the most common reason you might have an issue with a car A/C not blowing cold air. If the system pressures are too high and/or too low, the expansion device could possibly be the issue. Moreover, timely repair can avoid future issues as well. Common Problems: Internal failure allowing desiccant material to enter the AC system. Most likely it’s low on gas. Overheated engine Another common reason for car AC not blowing cold air when idle is an overheated engine. High condenser pressure is a sign of air in the system. Particle contamination from worn parts inside the compressor are a frequent culprit. Be sure to consult your owner’s manual, a repair guide, an AutoZoner at a store near you, or a licensed, professional mechanic for vehicle-specific repair information. A broken condenser is another genuine cause for which your car AC may not work properly. Use the key to start the car and turn the air conditioner on high. Worse yet, moisture in the system in concentrations greater than 20ppm can cause serious damage. Clogged tube shows evidence of “Black Death.”. 2. What’s happening? When your air conditioning system isn’t blowing cool air, that is the first sign that you need auto AC repair. It's cold coming off the compressor but doesn't reach the can. So, whenever your Car AC not blowing cold air after recharge, follow the above tips. If your AC is charged but not cold, read this. As the metals oxidize, they release particles that combine with the refrigerant oil to form sludge. So it reduces the condensing capacity of the condenser. Check out this guide with three things to check before going to the mechanic so you can diagnose your specific climate control problem. Should electrolyte get on your body or clothing, neutralize it immediately with a solution of baking soda and water. But we wanted to explain here 5 of the most common reasons why we find that car and truck air conditioning units are not blowing cold air, and the best way to overcome this issue- and get the AC cold again! If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem, radiator trouble, or it could simply be that you need to recharge your AC. Moisture in the system is freezing at the metering valve and restricting the flow of refrigerant. Check around all fittings to verify that they are all secure. It’s also possible that there is a very simple reason your car air conditioning is not cold, and that is electrical. Because the cold air takes some time to get produced. Eautorepair.net redraws factory wiring diagrams in color and includes the component, splice and ground locations right in their diagrams. so if the condenser fan and compressor working soo why im not getting ice cold. If the fan is damaged or cannot run with its full force, it cannot cool down the heat coming from the Freon (refrigerant) through the condenser. Please note that the tool that you receive after placing an online order may be in a used but operable condition due to the nature of the Loan-A-Tool® program. Air Conditioner – If your car’s air conditioner stops working on a hot day, then the ride to your destination can be quite uncomfortable. Use the tester to search for a leak. What to Look For: If the refrigerant is low, check for visible system leaks that appear green and oily. The car blows cool but not cold air. #1 Your Car has a Freon Leak One of the most common causes of an air conditioner malfunctioning is a freon leak. There are many components and other systems that can cause warm air to come from the vents. They cool the air by removing hot moisture. It then feeds that cool air into the engine. If pressure is low, then there may be a leak: Note: The dye check will not work if the system is too low and the compressor is not cycling. Common Problems: Refrigerant leaks. A/C isn’t cooling? Or, you can simply take your vehicle to the professionals as they know what exactly to do. Always disconnect the negative battery cable before servicing an electrical application on the vehicle to protect its electrical circuits in the event that a wire is accidentally pierced or grounded. Problems an AC tech will need to fix Now, we’ll cover a few warm-air AC problems that you’ll need to contact a professional to fix. You don’t need to tolerate a stuffy, uncomfortable car, and you don’t need to rely on the shop to fix the problem either. While there are several potential issues, the most common is low refrigerant. When diagnosing an air conditioning issue, it's easiest to begin at the compressor: If there is no voltage - a cycling switch may be bad, a fuse may be blown, and the system may not have enough refrigerant pressure to trip the low pressure cutoff switch that cycles the compressor. Without a doubt, it is no fun when you pop on your car’s air conditioner only to not feel cold air. The system is sealed with r134a gas at a guess which has a pressure switch for high/low pressure safety. But if it happens to you, know that you are not alone. Overheated engine. This happens most often in the winter when the seals and tubes contract. If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem, radiator trouble, or it could simply be that you need to recharge your AC. In this case, you can clean it yourself or even change this element. Like sugar in the gas tank, this stuff in the wrong places can cause major problems. So you have to refer to the factory legends to learn the identification symbols and then refer back to circuit diagrams to find the splice and ground locations. An automobile air conditioning system cools the air inside your vehicle by removing heat through a simple four-phase cycle. Once you have your gauges hooked up, move on to observing the AC compressor itself. I am sure everyone wants their car air conditioner to work at its best, especially during scorching heat. Fortunately, if the system is low on refrigerant, you can recharge it to regain access to ice cold air within just a few minutes. It’s that sludge that clogs the intake screens to the orifice tubes and expansion valves, preventing them from metering refrigerant into or out of the evaporator. A green and oily substance may appear in the drain tube if larger leaks are present. HCI corrodes steel, iron, copper and aluminum. Inspect and test before replacing! Common Problems: Contamination is the main cause of failure. They include wiring diagrams and technical service bulletins. But the decrease in cooling is even worse if the air carried in MOISTURE. If you need to dig into your doors, dash or console, Alldatadiy.com is the better choice because Eautorepair.net doesn’t any interior or exterior trim or body part removal. Leaks are the most common problem associated with the air conditioning system. FREE Loan-A-Tool® program requires returnable deposit. It allows the hot, cabin air to flow through the core, rapidly cools this air, and blows it out into the cabin again. But this problem that we are talking about, is quite a different one. The AC orifice tube / expansion device filters and regulates the flow of refrigerant through your air conditioning system. Any time an AC system leaks refrigerant out, it also lets outside air in. That is the most common question that people will ask in regards to their car’s air conditioner not working. The recommended high-side and low-side pressures can be found in your vehicle's repair manual, or online. The sludge coats the inside of the evaporator and condenser fins, reducing heat transfer efficiency resulting in a significant drop in cooling. AC systems do not actually create cool air. Refer to the service manual for specific diagnostic, repair and tool information for your particular vehicle. It’s no fun being stuck without air conditioning on a hot summer day, especially in a hot car where temperatures can quickly reach 150 degrees or more. The cool air felt from the dash vents is provided by the AC heater blower motor assembly. To test for air in the system, compare the static pressures listed in this charge to actual readings based on gauges and ambient temperature. The same is true for your car’s AC system. Common Problems: Leaks in one or more seals or the compressor itself can occur. Refrigerant and refrigerant oil readily absorb moisture when exposed to air. Reasons Why Your AC System is Not Blowing Cold Air The main issues that occur with the car’s air conditioning system are due to poor maintenance. And something as simple as a blown fuse can cause it to stop working. (C) 1989-2021 AutoZone, Inc. All Rights Reserved, Got feedback for our blog? Air in a car AC system decreases the system’s cooling ability because it takes up space in the condenser, yet it doesn’t condense. Car ac repair. If the air conditioning is set to max cool and fans on high, but is only blowing moderately cool air: Beyond this, the next step is to always check the pressures in the system using a manifold gauge set. The receiver/drier and accumulator have a bag of desiccant drying agent to remove and hold the moisture, but it has a limited capacity. Learn these factors and some standard prices from this guide. Car AC won’t cool due to sludge Air carries moisture into your car’s AC system and that moisture combines with the refrigerant and oil to form sludge. Orifice tubes are color coded. Why is my car air conditioner not blowing cold air . How to keep your car's ac blowing ice cold in your car DIY with Scotty Kilmer. Pricing: ---Eautorepair.net--- 1 month subscription $19.95 per vehicle 1-year subscription $29.95 per vehicle 4-year subscription $44.95 per vehicle ---Alldatadiy.com--- 1-year $29.95 subscription: additional vehicles $19/95 each 5-year $49.95 subscription: additional vehicles $34.95 each Which one should YOU choose? If your Ac is warm at idle, takes forever to get cold and you have to keep it low to feel cool a new refrigerant control valve solenoid will probably fix that. Winter means bad weather, less sunlight, and poor road conditions. Over time, the bag of desiccant can fail, spreading the desiccant throughout the system where it clogs the orifice tube and expansion valve. The AC condenser looks similar to a radiator and works in conjunction with the radiator fan(s). Water in an AC system reacts with the refrigerant to form hydrochloric acid (HCI). If you frequently add refrigerant from a DIY recharge kit and have finally reached the point where the system is fully charged but not cold, chances are you’ve caused the damage yourself. Assess how warm, cool, but not cold, read this issues, the most common that! Time because you don ’ t cool your home as well as it be. From this guide with three things to check your car ’ s air while there are a of. Keep your car ’ s air conditioner only to not feel cold air when idle is an engine! System works and what parts you should go on troubleshooting could possibly be the issue with flow... S knowledge, however, if you find that the expansion device could possibly the! While looking like a huge ice cube with holes in it the inside the! Reserved, Got feedback for our blog by the AC evaporator box water tube. 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