Car Ac Blowing Hot Air When Idle

Many car owners face this problem every summer. When driving it blows warm.

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I drive a 2017 Perodua Bezza Malaysia.

. The engine temp is also normal. Thanks for listening gents. Up to 8 cash back The purpose of the high pressure hose is to increase and decrease AC pressure during different driving conditions.

Inadequate airflow over the condenser may cause this condition. I released pressure at idle until it was at 40psi at idle and was constantly blowing warm air at all rpms. This problem is a known issue See Bulletin No.

Simply put your cars AC system cannot. So your cars AC was doing fine for the longest time. The outside temp was around 90.

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. 2 cause of AC blows warm at idle. There are several ways debris can get into your cars air conditioning system to make it not blow cold air.

Then gradually you began to notice that it wasnt really blowing cold air anymore or that it would only blow cold when the car was moving but not at idle. Your AC system is low on refrigerant. The most common cause of an AC system blowing hot air is due to a low level of refrigerant.

If the ac isnt blowing cold air when the car is idling this is an indication that there may be a problem with the AC system high pressure hose. AC blows with good gusto cold when vehicle is moving down the road. As stated my cars AC will blow cold when idle but when I start moving the AC blow hot air.

Since the AC compressor is driven by the engine it doesnt pump as much refrigerant when youre at a stop or driving slowly. The air is blowing and when i idle the car it is warm air blowing then when i take off i will start having the AC get cold as i drive. The only time you can tell something is wrong if you stop and it starts to blow warm.

My AC started blowing warm air when sitting idle. If the refrigerant system cooling fans are operating properly the vehicle still blows warm air at idle the problem is a control function quite possibly the temperature blend door is not functioning properly or there is a poor vacuum source. The compressor of the AC system moves heat from the radiator to the condenser.

When it was showing the high pressure at idle the compressor was working and fan was on. Wifes AC on 06 Corolla was not blowing cold enough air so I bought AC Pro recharge kit and refilled the system. What could be the reason for this.

Because the AC system relies on refrigerant to convert warm outside air into cooled air not enough of it will cause the system to push the warm air into the cabin. That being said he was way too busy at the time to dive into another project. Cooling fans not workingthe reason it dont run hot when youre going 55 or 65 mph is because enough air is flowing through because of speed to cool the systemthen in stop and goNOT enough time or air flowing throughfix the cooling fan problembefore you RUN IT TOO HOT AND DAMAGE THE ENGINEtemp sensoror air in the system.

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. Otherwise youre not getting any airflow through the condensing coils during idle to transfer heat from the system. If your car AC is blowing hot air it is very likely that the refrigerant in the unit is low.

Check that the condenser fan is operating properly. Another common reason for car air conditioner not blowing cold air when idling is an overheated engine. Your AC Refrigerant is Leaking.

If anyone has a pretty good idea of what this is please let me know I would appreciate it. Almost immediately at stopping at idle it begins to blow warmhotter air. Is there any test I could do to determine which component is at fault.

Most cars have two cooling fans one for the condenser and the other for the radiator. Refilling the Freon in your car ac system can be the solution for car air conditioners blowing hot air when idle. AC stops cooling and blows warm air when the vehicle is idling for an extended period of time such as sitting in traffic.

If the system is low on refrigerant it will show up as AC blows warm at idle and blows colder when the engine is running at higher RPMs. It is also possible that there is a problem with the AC compressor. So check the Freon level in the first place.

I checked the pressure this morning and it. It sounds like your thermostat may be stuck open with the engine working hard the temperature of the engine comes up thus the warm air but just at an idle the thermostat is letting the coolant circulate and not holding it their until it reaches a warm enough temp. I show in this video what was causing the problem and how I fixed it on my 2005 Hyundai Santa Fe.

A refrigerant is a special kind of gas but compressed to liquid that gives the unit its cooling ability. An AC that malfunctions can show the first signs of error when it is restricted in power. The fans are working.

The AC is now cold but only when the car is sitting idle. Or worse yet you come out to start the car one day turn on the AC and its blowing barely cold air when it was fine just yesterday. Usually such a condition begins with a decreased cooling performance only when idling but later turns into a more noticeable and serious problem where the AC stops cooling completely and even starts to spit out hot gusts of air.

Get your system refrigerant level. We checked the pressure with one of those do it yourself refill kits and it is in the normal range so we were afraid to add any.

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