Why does my AC only work when the car is running?
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 air conditioner work better when I’m driving?
Another reason why the air conditioner works only when your car is moving may be low freon levels. If your air conditioning system freon levels are below what is needed, your car ac will not cool properly. As a result, it only cools when your car is moving as the car is then capable of pumping the freon with ease.
Why does my car AC not work when it’s hot?
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. Like broken condenser fans and electrical fault can cause a normally working system to stop working simply due to a bad connection or faulty sensor.
Why does my AC not work when my car is idle?
The condenser is primarily responsible for ensuring cool air from the AC vents. If the condenser has gone bad, it will not be able to process the freon and produce cool air. A broken condenser might malfunction when there is a cut back in power as when the car is idling or running the AC purely on the battery.
What to do when your car AC is running?
Check the radiator fans to make sure at least one fan turns one when the AC is switched on. However, some cars operate both fans at low speed while driving and switch into high speed mode when the AC is running. So get tricked into thinking your fans are ok simply because they’re running.
What do you need to know about air conditioners in a truck?
Signs of Air Conditioning Problems Inside the Truck Wet carpeting on hot, humid days can indicate a clogged air conditioner drain. A vibration or abnormal noise when the fan is on could indicate debris in the blower fan (mice like to build nests in fans).
Why does my car AC not work sometimes?
Both parties have to work in partnership to arrive at the solution to the problem. Common electronic problems relate to sensors that give input to the heating and air conditioning computer and the electronic control head. People often ask whether it’s worth it to check online to find a solution.
Why is my car AC blowing cold today but warm Tomorrow?
Blowing cold today but warm tomorrow? One of the most difficult automotive air conditioning problems to diagnose is an intermittent A/C problem. In other words, one day your car’s A/C is blowing cold air, the next day it’s warm air.