why is my car ac blowing hot and cold air
On 2001 Chevrolet Express 3500 The ac has very cold air idling. Your car uses coolant usually made up of 50 antifreeze and 50 water to cool your engine down especially during the hot months of summer.
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Any blockage in these lines can prevent warm water from reaching the core and thus allow cold water to flow through it.
. Weve got your back. This could help your. During the winter when you crank up your heat the coolant is brought over from the engine to the heater core that then blows warm air.
If your car has a cabin air filter and you think you might have an evaporator freeze up problem start by checking the condition of your cabin air filter. In the late afternoons however when the temperature is above 90F I get cold air for 2-3 minutes then I hear a 2-5 second groan followed by about 5-10 seconds of warm air and then everything returns back to normal again with cold. The fans could actually be broken like a burnt out motor bad mount a chipped fan blade or they could simply have an electrical problem like a blown fuse or burnt out relay.
Another possibility is that there may be some type of restriction in the cooling system which is. How much does it cost to fix AC in car. The compressor is engaged.
Like having a blocked condenser having broken cooling fans can cause a lack of cooling at your condenser and could cause your car AC blowing hot air. Why Is Your Cars Ac Blowing. Refrigerant is a liquid that circulates through your cars AC system expanding and contracting as it removes heat and humidity from the cabin.
A car AC thats intermittently cold in Chino CA can also be due to a blocked evaporator drain or an overcharged systema freezing problem can also usually be identified by customers if there are puddles of water under the car. If you notice a poodle or drops of fluid under the car then its very likely from a bad expansion valve assuming your radiator isnt faulty. A leak can happen because of an old hose as well as a rusted or punctured evaporator.
When it gets above 90 degrees out side it will start blowing hot. Hot air blowing from a car air conditioner can be caused by a number of issues related to refrigerants compressors filters and so on. AC HEATER BLOWS HOT ON DRIVER SIDE COLD ON PASSENGER SIDEIf the ac or heater is blowing hot on the driver side and cold on passenger side or blows cold on th.
I have cleaned the coil. The expansion valve distributes the proper amount of refrigerant to your evaporator. If the valve is blocked the refrigerant flow could be restricted or could be too unrestricted.
The most common cause of an AC system blowing warm air is a lack of refrigerant though you may also have a problem with your condenser. Thankfully in this guide we will review each of these car AC problems in detail. Moisture in the AC system can also cause an AC blows cold then warm condition.
When driving the ac air will blow cold then not as cold and back and forth but will keep the cab cool. If this is the case be sure to take it into a mechanic as quickly as you can. The following are some issues that may be causing the heater to blow cold air.
Other possibilities include a faulty compressor broken cooling fans or an issue in your electrical system. You can check for puddles under you car as well as check the level of your Freon. If the heater is blowing cold air and the car is overheating it is likely that the problem is related to the engine cooling system as well.
Why does the heat in my car get cold when I stop. Newer Post Older Post Home. How To Fix Car Ac That Blows Hot Air Ac Compressor Ac Compressor Car Air Conditioner Repair Share this post.
If your AC flip-flops from hot to cold and back again your expansion valve could be failing. Why does my ac blow cold air warm air cold air. Why does my car AC blow hot and cold air at the same time.
Based on your description a faulty cooling fan would explain why the AC stopped blowing cold air and also why the engine would be overheating. A car AC blowing hot air is often the result of a refrigerant leak. Why Is My Car Air Conditioner Not Blowing Cold Air Rx Mechanic.
Mostly the compressor of the air conditioner transfer heat from the radiator to the condenser if your car has become over heated and heat transfers alter efficiency your car air conditioner will stop blowing cold air when it is idle. Any time you lose refrigerant from your cars AC system that leak allows air and moisture to enter. When the temperature outside is cooler say less than 80F and I turn my AC on everything works great and I get nice cold air in the car.
So if youre having a similar problem dont worry. If this isnt the case the next car air conditioning troubleshooting tip is to see if there are any leaks. Your car AC blows warm on the inside but cold on the expansion valve.
A dirty cabin air filter could be causing the problem since air thats not entering cleanly will cause the AC to not work at peak efficiency. There might be trapped air in the cooling system or the heater core could be partially cloggedTwo heater lines provide engine coolant to the heater core. If its hot in a situation of car air conditioner blowing hot air then its an engine problem.
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