Car Air Conditioner Gets Warm When Idling

This will often cause the fan or fans to kick on. 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.

How To Fix Car Ac That Blows Hot Air Possible Causes Youtube

Usually it means you are low on refrigerant just a bit.

Car air conditioner gets warm when idling. I used a can of the sub-cool r-134 from auto zone. Car AC blows cold then blows warm Car AC blows cold then warm. Answer 1 of 9.

The issue is related to the AC which works partially normal. You are probably not moving enough air through the cooling radiator. Just read your post again and it really sounds like a low freon charge.

Fixed mine right up. If the fan is damaged or cannot run with its full force it cannot cool down the heat coming from the. Most fans do not pull enough air at idle to cool air enough to keep your car cool as it did when we used Freon.

If your car AC blows cold when youre moving but the AC blows warm at idle slowdowns or stop lights it can be caused by any of the items listed below. If your car AC blows cold then warm the cause can be a low system charge moisture in the system a malfunctioning expansion valve clogged evaporator fins or an overcharge condition. At early morning and after the car has run for a while idling will blow cold even in hot temps.

Inadequate airflow over the condenser may cause this condition. If its not working at idle RPM of around 600800 but works at engine cruising RPM of 1000 to 1500 or more then you are pr. During idling however the AC starts blowing warm air and it gets warmer and warmer the longer the car is not in motion.

The pressures stay the same at idle and when accelerating. When the car is moving more air is forced. The reason is that coolant expands when it gets hot.

I have checked all. If I am at a traffic light I can put the van in neutral and press the gas and it will start blowing cold again. Also when I stop at a light the AC blows warm air.

AC blows with good gusto cold when vehicle is moving down the road. When your car starts moving the airflow restores the cooling ability to your system. That being said he was way too busy at the time to dive into another project.

The car not knowing that will still try to turn that compressor therefore overheating the engine due to the additional strain put on it. When the accelerator is pressed while in P Park or D Drive the compressor continues to run but the cabin air vents blow warm air. Car AC units are designed to work best when the car is going down the road.

It sounds like your AC unit could be overheating or even damaged. Another reason that your car overheats when idle and AC is on may be caused by a malfunctioning cooling fan cooling motor or any connectors controls that activate the cooling fan. Air Conditioning blowing warm at idle.

The cooling fan in the condenser is the first thing that you should look into while finding out the reason for car air conditioner not blowing cold air when idling. It is a synthetic and supposed to cool better. Once Im moving it gets quite cold.

When idling hood up hot day and letting the ac run. If there is an insufficient amount of air flow the unit will heat up and then eventually turn off. My car has gone around 130000 miles.

Is this a case of needing to reload the AC with the refrigerant. When the AC is on and the engine is idling the cabin air vents blows ice cold air. When Im not in motion and my car is just idling like in my driveway my car overheats and the air conditioner blows only hot air.

Jump to Latest Follow 1 - 14 of 14 Posts. Now it blows warm air during start up. Check whether the electrical connections for the condenser fan is connected and seated firmly.

Also the engine is not running fast enough. AC stops cooling and blows warm air when the vehicle is idling for an extended period of time such as sitting in traffic. Car AC blows warm at idle AC blows warm at idle 4 reasons.

Heres how to nail down the cause. I had the compressor replaced back in February and the pressure is normal so it doesnt look like it has a system leak. Almost immediately at stopping at idle it begins to blow warmhotter air.

When I drive the car and get it moving 30 mph or so the high side reading drops to under 100 psi along with the loss of cool air. While I drive and the engine revs up from 1700-2200 RPM the AC works well. Since I just spent 1300 a few months ago when.

The compressor is usually on a belt takeoff from the engine so it works better at higher engine RPM. Low car AC charge causes evaporator freeze up and low airflow. One way that you may be able to test the operation of your radiator fan is to turn on your air conditioning.

The AC used to blow cold when we start the car. Thanks for listening gents. The high and low side gauge readings are normal around 30035 psi.

What you can do is check whether the electric cooling fan that sits beside the condenser is running. If I am driving on the highway and accelerating there is no overheating and the air conditioner works well blowing nice cold air. Answer 1 of 6.

This problem is a known issue See Bulletin No. If anyone has a pretty good idea of what this is please let me know I would appreciate it. A car that overheats when idling is deadly serious.

Air Conditioning Symptoms Car AC blows warm at idle. The AC was totally rebuilt about 13 months ago. Now for the feeling of warm air at idle if your car has a sight glass on the receiver dryer assembly or.

Bring the car to a stop the high side goes up. It cools the car again when I drive. When the car is standing still I can run the engine at 2000-3000 rpm and the air is still cold.

Ive got this same issue on my 01 Beetle the mechanic says that both fans are running when its at idle but I also get hot air blowing when I sit idling especially when its really hot outside. Car blows warm air when idling. I have a 2002 Ford Windstar and the AC has started blowing hot when i idle but it blows cold when I am driving.

AC units have a sensor that will turn them off automatically to prevent damage from overheating.

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