car air conditioner blowing hot air when idle

Saturday August 8th 2020 AT 1212 PM. The issue is related to the AC which works partially normal.

Car air conditioner not blowing cold air when idling is a pretty common issue.

. However the AC unit could be completely blown. But everytime I switch off and on the engine and on the AC tooAC okay again and the fan is turning. Dan-Pape June 28 2019 730pm 1.

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. Have the same problem. The cooling system in a car is mainly shared by condenser and radiator in which a fan is attached for forcibly removing heat from the refrigerant.

It blows ice cold at idle. 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. So I checked low pressure and at idle it was bouncing around from 100 to 120psi and when rpms were increased to 2500 pressure went down to 35psi and was blowing cold air.

When the car is moving more air is forced over the unit likely keeping it cool enough to run however when the car come to a stop it loses that air flow and quickly heats up. If your car AC blows cold air when driving at highway speeds but turns warm at stop lights or when driving at slow speeds you may have a bad radiator fan or radiator fan relay. Car_ac_blowing_hot_airjpg By dnberty Licensed by Getty Images Original Link.

So check the Freon level in the first place. In running condition of the car the cooling effect is achieved by rapid flow of air through the condenser but in Idling condition t. When I drive the car and get up to 30 mph or so the vent air temp goes up and after a few minutes of driving the vent air is barely cold.

Blocked or Broken Condenser. Then I was sitting idle waiting to get an emissions test and the ac started blowing hot air. Your AC system is low on refrigerant.

AC blows warm while idling cools during driving. Other possibilities include a faulty compressor broken cooling fans or an issue in your electrical system. Bad or Failing Fan Clutch.

The AC blows cold air when driving but when I come to a stop and just idle it starts to blow hot air. My AC started blowing warm air when sitting idle. Even if a system is just slightly low on refrigerant it would also cause the system to start blowing warmhot air.

During idling however the AC starts blowing warm air and it gets warmer and warmer the longer the car is. The coolant supply is blocked. I live in AZ and it is about 108 today.

If the heater has a tap for supplying coolant to the radiator. Air in the cooling system impedes the circulation of coolant in the system and as a result the heater blows hot air only when driving and cold air at idle. So your cars AC was doing fine for the longest time.

In cars with dual fans one fan is designed to run at full. A Faulty condenser fan. HEATER BLOWS COLD WHEN DRIVING THE CAR HOT WHEN IDLESIf you car heater starts blowing cool or cold air when you drive you car on the highway in cold weather.

There are several ways debris can get into your cars air conditioning system to make it not blow cold air. Please contact our technical support line at 888-863-0426 so that we can get a little better understanding of the vehicles condition and be able to make any appropriate recommendations. 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.

Up to 8 cash back Q. I have tried a few things already and am stumped. 2 cause of AC blows warm at idle.

Refilling the Freon in your car ac system can be the solution for car air conditioners blowing hot air when idle. Inadequate airflow over the condenser may cause this condition. Thus the AC would work while the vehicle is in motion and overheat and stop when the car is stopped and idling.

AC stops cooling and blows warm air when the vehicle is idling for an extended period of time such as sitting in traffic. Answer 1 of 7. While running the AC is blowing cool but if idle after about 15mins it start to blow hot airI checked the condenser fan and its not turning.

But Im not sure if thats normal for my type of car. Since the AC compressor is driven by the engine it doesnt pump as much refrigerant when youre at a stop or driving slowly. These were the two main causes for car AC not blowing cold air when idling however there can be a few more that can indirectly lead to such a problem and thus shouldnt be ignored-.

Cannon Auto Repair 1. I got in the car and noticed the ac was cold but it felt a little weak didnt really think much of it as it was really hot outside. While I drive and the engine revs up from 1700-2200 RPM the AC works well.

I thought maybe it would be low on refrigerant. I had a very strange issue happen today. The cooling fan in the condenser is the first thing that you should look into while finding out the reasons for car.

Many cars are equipped with two radiator fans while others have one fan that can run at different speeds. I have a 2011 focus with AC blowing warm at idle but cold at higher rpm. This problem is a known issue See Bulletin No.

Well have the system pressure tested if youre low on refrigerant it can do just that pray its that easy of a fix. When the car is standing still I can run the engine at 2000-3000 rpm and the air is still cold. Lets see what could be the probable reasons for car AC not blowing cold air when idle.

When I stop the car and idle it the cold air returns. 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. Thankfully in this guide we will review each of these car AC problems in detail.

My car has gone around 130000 miles. I show in this video what was causing the problem and how I fixed it on my 2005 Hyundai Santa Fe.

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