In other words, one day your car’s A/C is blowing cold air, the next day it’s warm air.Ironically, the very thing that makes an air conditioning system convenient, easy to use and reliable is the thing that most often causes intermittent problems — electronics.Over the last ten years more and more features have been added that make automotive air conditioning and heating systems more complex. An evaporator covered in ice can’t cool the air, so you would have to wait until the ice melts, which is why the cold air eventually returns.

There may be numerous issues causing the icing—from a dirty cabin air filter to a blocked evaporator drain or an overcharged system. This typically happens if the engine is too hot, so be sure to check your car’s temperature. Both parties have to work in partnership to arrive at the solution to the problem.Common electronic problems relate to sensors that give input to the heating and air conditioning computer and the electronic control head.People often ask whether it’s worth it to check online to find a solution. It stopped working last summer and a few days later it was cooling again. An evaporator covered in ice can’t cool the air, so you would have to wait until the ice melts, which is why the cold air eventually returns. Typically an iced over evaporator is the culprit. A condenser has coils and a fan to push the air through the coils and thus cool the refrigerant. No, your car didn’t get confused and turned on heat by accident. Over the last ten years more and more features have been added that make automotive air conditioning and heating systems more complex. Why does my air conditioner only work sometimes (intermittently) in my 2000 Toyota Tacoma PreRunner? Look for puddles of water under your car—this could be a sign of a freezing problem.AC systems in vehicles can be tricky and differ from car to car, so we recommend taking your car to your local Gaithersburg mechanic for proper diagnostics and repair. When it does work, it's like there's nothing wrong. Even something as simple as a cabin air filter replacement can turn into a 3-hour project for a novice. Maryland may not be as brutal as Texas, but getting through your day without a working air conditioner in your car is still a huge inconvenience. Or is it? Hope, this guideline on how to fix car ac blowing hot air helped you out to get done with the issue of car ac blowing warm air intermittently.

If you are good at performing your own repairs then it may be worth trying some inexpensive suggestions. To make it easier to record the information, The next step is to bring your car in, along with the diagnostic sheet, and have it checked out.First of all, the basics have to be right. At General Automotive, we can fix your car fast and at an affordable cost. To do this we use a data base and a hotline. It seems to work when it wants to but it does seem to stop cooling if I've been out driving a couple hours. We will test the pressure and use special dyes to pinpoint the leak.As you get in your car and turn on your AC, you probably expect it to be blowing hot air for the first minute or two until the system cycles through enough to cool it. Ironically, the very thing that makes an air conditioning system convenient, easy to use and reliable is the thing that most often causes intermittent problems — electronics. It's hot outside but cool in your car. If this doesn’t uncover the problem the technician will hook up monitoring equipment and see if he can reproduce the problem. Gaitherburg (20877, 20878), Germantown (20874, 20875, 20876), Rockville (20847, 20848), Damascus (20872), Darnestown (20874, 20878), Montgomery Village (20877, 20879, 20886), and more.©2020 General Automotive Servicecenter, All Rights Reserved. But what if the air never gets cold? Why is it unreliable? The cold air returns shortly, and the cycle repeats itself for as long as you are driving.
Typically an iced over evaporator is the culprit. I may not drive for a couple days and it will cool again.

If the problem still does not surface we might recommend that you drive the vehicle and see if the problem shows up as well as to identify if any of the symptoms have changed. We know the feeling. It’s best to take your vehicle to an experienced So you went for a road trip or a long drive, and after 30 minutes of driving realized that your AC suddenly stopped working or switched to blowing warm air. Or maybe it it gets cooler, but not cold enough? If the condenser coils get dirty or clogged, or if the fan fails, the refrigerant won’t be cooled completely, so the air will come out warm. Intermittent cooling is often caused by the components of your vehicle’s AC system freezing up. Make sure to have no water on the condenser while putting back on the ac unit again. He came to the U.S. in 1972 to work for a Land Rover dealer in Rockville, MD, and a few years later, started British American Auto Care with his wife, Jennifer.

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