car ac stops blowing cold air after a while
Bad ac compressor on car 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. And that eventually cools the refrigerant. After stopping the car and turning motor off the air will come out cool again for a few minutes then it the air coming out of the air conditiner becomes warm again. I had just finish installing an after market car stereo when it started to do this. Opening the windows is not helpful because its hotter outside usually. I can turn the ac button off for a few minutes and then turn it … read more If your car heater is suddenly blowing out cold air instead of heat in the middle of a bitterly cold winter, you have a good reason to be frustrated. Unreliable car heaters can make the cold winter months practically unbearable. You might not think your filter contributes to your AC … A condenser has coils and a fan to push the air through the coils and thus cool the refrigerant. Also, at times I can turn off the AC and turn it back on in a few minutes and it will blow cold again. To compare what the gauges are reading. Now back home, and A/C seems to work just fine going on short errands. If you notice that your thermostat gauge stays on the “C” even after the … If I turn off the AC switch and let it sit for about 5-10 minutes and turn it back on (can hear the compressor kick on) it will blow cold air again for another 15-20 minutes or sometimes less. This door is located in the ventilation system. Freezing can also be caused by an oversaturated receiver/drier or accumulator. I have added R134a refrigerant and saw the compressor begin to engage properly. This is often the case. Two things could be going on here low on ac charge causing the low suction side pressure to go lower then usual causing the ac evap core in the dash to freeze up. You can even cycle the A/C on and off every few minutes to prevent the icing from getting very far each time. The main issues that occur with the car’s air conditioning system are due to poor maintenance. There are many reasons your car's heater isn't working. Blend air door is the reason for drawing hot air to cold air … Regarding checking the pressure, does that mean I need to recreate by driving this thing an hour? 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. What’s wrong with your car? Hi my 2002 Honda Civic LX 2DR A/C stops blowing cold air after 20 minutes, If I turn it off for a few minutes it will works fine again. 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. Air conditioning initailly cools , but after about 3 minutes it stops blowing cool air. Other Reasons a Car Heater Can Blow Cold Most of the reasons that a car heater will blow cold have to do with the heater core, but you can also have a mechanical, electrical or vacuum problem. OK. 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. We stopped several times to have the AC looked at. A fairly common cause of this particular issue is that the expansion coils in the cabin side of the unit get iced up restricting the flow of air across the coils. A low system charge can cause the evaporator coil to so cold that it freezes the condensation on the evaporator fins. The condenser, while looking like a radiator, acts as a cooler on the ambient temperature that blows through the car. This is especially a problem in humid climates. You would need a ac gauge set to measure pressures. Please Help! Maybe you hit it. Intermittent cooling is often caused by the components of your vehicle’s AC system freezing up. Even something as simple as a cabin air filter replacement can turn into a 3-hour project for a novice. I got so tired of it that I simply stopped using my a/c. At first, your car blows cool air like normal. The second the pressure switch that controls the ac compressor to turn off and on at certain pressures is reading wrong. I was thinking this fact pattern had a potential known diagnosis. There may be numerous issues causing the icing—from a dirty cabin air filter to a blocked evaporator drain or an overcharged system. The light on the controls is still on and seems to be running. It’s best to take your vehicle to an experienced Maryland auto ac repair professional to troubleshoot this problem if you don’t know your way around under the hood. Here is a more detailed list of the most common causes of a car AC not blowing cold air. Took It To A Mechanic And He Stated Its Not Working Bc The Rear Air Conditioning Condenser Has A Leak. 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. A condenser’s job in a vehicle is to cool the warm refrigerant that was used to make the air cold in the evaporator. Excess air and moisture in the system may lead components to freeze (literally). My AC will stop blowing cold air after driving for about 15-20 minutes. Typically an iced over evaporator is the culprit. When its acting up we need to check the high and know pressures also is the condenser fan working? Stuck & Blend Air Door. Refrigerant level low. It may start blowing cold again after awhile, but not always. The evaporator is likely responsible. At our Maryland auto repair shop, we help many customers with AC problems in summer. The AC is now cold but only when the car … The evaporator is likely responsible. I had just finish installing an after market car stereo when it started to do this. At first, your car blows cool air like normal. After driving for a while, the cold air turns hot for an uncomfortable period. Normal and the cycle repeats itself for as long as you are driving being cold will work fine for few... As a cabin air filter to a blocked evaporator drain or an overcharged system potential diagnosis... About 7 hours each way work at all s just not cold enough turned the compressor! Ac problems in summer AC system it ’ s hot 20 minutes and sometimes it run. An entire system failure, including undone welds, loose connections, corrosion, physical damage from road debris etc! 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