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 AC only work when car is 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.
Why does my AC get warm at idle?
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 AC stop working at idle?
Originally Answered: Why does AC stops working while idle but gets cold when driven? If this is a new problem, its probably because you are low on refrigerant, or your evap coil (next to your heater coil) is clogged with dust/dirt. If this is a retro R12, (freon) to something like 134A. Its a gas problem.
Why is my AC only cold when I’m driving?
Most likely your refrigerant has a small leak which has lead to a condition where your compressor can only properly function while the engine is running at higher than idle speed.
Why is my car AC cool but not cold?
The most common causes of broken air conditioning are leaks or compressor issues. If your air is blowing cool but not cold, the problem could be a clogged filter, cooling fan problem, radiator trouble, or it could simply be that you need to recharge your AC.
How do I know if my car AC is low on refrigerant?
Well, there are a few signs to look for.
- Room Temperature Air. One of the most characteristic symptoms of low freon is the presence of room temperature air blowing from the vents. …
- Visible Leaks. Of course, another sign of low freon levels is a visible leak. …
- Clutch Doesn’t Engage. …
- Ice on Compressor.
How do I know if my car AC compressor is bad?
What Are the Signs and Symptoms of a Bad A/C Compressor?
- A Lack of Hot Air Being Released Outside. …
- Loud or Strange Noises From the Unit. …
- Failure of the Compressor to Turn On. …
- Circuit Breaker Tripping. …
- Leaks Around the Air Conditioning Unit. …
- Warm Air Instead of Cool Air Being Delivered to the House. …
- Reduced Airflow.
How much does it cost to fix an AC condenser in a car?
How Much Does Car A/C Condenser Replacement Cost? Car A/C condenser replacement cost about $679 with average auto AC condenser replacement prices ranging from $585 to $773 in the US for 2020 according to RepairPal.com.