Why does my AC only blow cold air when driving?
When there’s a problem with the compressor clutch, your air conditioner won’t blow cool air for long. A damaged, failing, or worn compressor can’t properly regulate the flow of refrigerant in the A/C system to deliver the cool air you crave.
Why does my AC blow cold when I’m driving but not when I’m still?
So if your fan stops working, the A/C can’t work at it’s full potential. You can also make the A/C colder by raising engine speed. While you’re driving, the compressor spins faster so the high pressure side becomes more pressured and the low pressure side loses some pressure. This means more expansion and more cooling.
Why does my car air conditioner only work when I’m driving?
This is because it is not able to regulate the refrigerant needed to cool down the air. You may notice the car being most affected when stopped, as the engine is not working as hard, and there is no airflow from driving down the highway.
Why does my car not blow cold air when idling?
Overheated engine. Another common reason for car air conditioner not blowing cold air when idling is an overheated engine. When the car is already overheated and the fans in the radiator and condenser are not working properly for some reason, the system can’t cool down the heat with the maximum efficiency.
Why does my AC blow hot when I stop?
Your AC system is low on refrigerant. Since the AC compressor is driven by the engine, it doesn’t pump as much refrigerant when you’re at a stop or driving slowly. 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.
Why does my car blow hot air when not moving?
When the car is moving, versus stopped, there is more air flow over the condenser (the heat exchanger in front of the radiator) and that airflow is essential to system operation. Other possibilities are that the compressor clutch is not cycling as intended or that the condenser might be blocked or dirty.
When does the AC blow warm air or cold air?
The AC on my 2008 2.0 L turbo now only works when I am driving at speeds of at least 30 MPH. When driving at slower speeds or idling, the AC blows warm air. I brought car to two VW dealerships to have their service department diagnose the problem.
Why does my car not blow cold air?
Some cars when the engine cooling fan behind the radiator doesn’t turn on it won’t let the compressor turn on as it would make the engine overheat. Maybe you can check under the hood at idle with the A/C on and visually look to see if the fan is turning.
When does the AC get cold in a car?
AC is cold only when the engine is revving above certain rpm. When at a stop, the air is warm…but if I put it into neutral and rev the engine to, let’s say, 2000+ rpm, AC gets colder…or when Im driving, obviously. I know everyone is gonna say something about the condensor fan but would it be the fan given above circumstances? Buying Guides Deals
What to do if your car AC is not working?
You can handle this situation by using the best maintenance tips. Use a charging machine that will pour coolant and make your AC work properly. If the AC still doesn’t work even after using the charging machine, contact the nearest mechanic.