why is my car ac blowing hot air on one side
In case your system leaks then it could cause your AC unit to blow warm air since theres little or no coolant to cool things down. It is also possible that the problem could be with your refrigerant or lack of it.
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The other possibility is that you have a temperature control door actuator that is malfunctioning.
. Other possibilities include a faulty compressor broken cooling fans or an issue in your electrical system. Its essential to consult an expert mechanic such as one from AAMCO Utah since these leaks can. Refrigerant is a liquid that circulates through your cars AC system expanding and contracting as it removes heat and humidity from the cabin.
It will lead to the AC unit blowing hot air. Thankfully in this guide we will review each of these car AC problems in detail. If it works this way the left-right temperature diff may show late in normal usage when its not too hot because the dual control will work to keep the set temperatures by mixing in less warm air on the left side.
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. The most probable cause is the blend door actuator. The most common causes behind an air conditioner blowing hot air on only one side will be a bad actuator electrical issues device settings battery issues or refrigerant issues.
Some of these can be fixed easily whereas others will likely need the services of a mechanic. When youre driving the fan is cooling the refrigerant inside the condenser and at idle it isnt getting sufficient airflow for cooling. Even well experienced car mechanics may be surprised to learn that as little as 4 to 8 ounces undercharged of 134A can make such a huge difference.
Due to the design of dual AC systems low refrigerant is the leading cause of drastic temperature difference from one side of the dash to the other. Based on your description it is possible that a faulty condenser fan is causing the air to blow warm at idle and could also explain why the vehicle starts to overheat. Unplug each one and plug them back in and the drivers side started blowing cold air again.
This free information can be equally helpful to the do-it-yourselfer as it is to a consumer that. That means we need to start eliminating things that this could be because I am not sure of just one thing that could cause this. If you put a UV scope up the drain tube you would see all the oil and dye that collects in the Evaporator case.
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. This situation can be caused by a bad blend door also called air mix actuator a broken or binding blendair mix door broken linkage to the blendair mix door or a faulty HVAC control head or wiring harness. The blend air door could be jammed which would flow cooled air over the heater core before it blows out the vents.
Car air conditioning systems that blow warm on one side and cold on the other side usually have one of two problems. We need to remove this and adjust the temperature and see if the actuator moves when it is plugged in but removed from the housing. The dye test does not work on the evaporator because the condensation washes away the dye.
One fairly easy test of this would be to run the AC full blast with the engine cold and see if the air coming out is really cold then starts getting warmer as the engine warms up. Location of the drivers side is above break pedal for both stacked above each other with green plugs. In this short auto repair article a master automotive technician shares his experience derived from working on air conditioners in Florida for the last couple of decades.
If it does not move with the adjustments and commands there is a problem with the blend door actuator and it will need to be replaced. They can be diagnosed with an advanced scan tool. Charge it up and use a Freon detector 25 bucks on Amazon to test the evaporator.
None of the other AC components will function correctly without proper refrigerant levels. Defective air mixing gates are of course possible but not very likely with my little use of the AC so far. A car AC blowing hot air is often the result of a refrigerant leak.
Passenger side is behind glove box on the left. In a vehicle with dual temperature controls you may encounter a situation where the vent blows cold one side hot on other side or vice versa. You can recharge your refrigerant by yourself but to save time and make sure the job is done correctly you should make an appointment with your local professional auto shop.
It may be broken and not allowing the door that controls the temperature on that side to adjust. Blend door actuators are the most common reason for the car air conditioning to blow cold air on one side and hot air on the other. Up to 8 cash back As crazy as it sounds I have had a low refrigerant charge in the ac system as a cause of this so it may just be that your ac needs to be recharged.
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. So if you are blowing HOT on driver side the freon is low. The most common cause of a vehicles air conditioner not getting cold enough is that it needs to be recharged.
Why is my car air conditioner not blowing cold air. 8 people found this helpful.
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