Asked by: Mazie Yrigoyen
asked in category: General Last Updated: 15th March, 2020

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.

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Besides, why does my car AC sometimes blows hot air?

A small refrigerant leak is the most common reason a car's A/C gradually loses its cool. A leak in your A/C system could be causing the unit to blow warm air, since there isn't enough refrigerant in the system to cool things down.

Similarly, why does my car air conditioner not work when stopped? 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. If the fan is damaged or cannot run with its full force, it cannot cool down the heat coming from the Freon (refrigerant) through the condenser.

Besides, 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.

What are the symptoms of a bad AC compressor?

Symptoms of a Bad or Failing AC Compressor

  • Cabin temperatures higher than normal. One of the first signs that a compressor may be having trouble is the AC no longer blowing as cold as it once did.
  • Loud noises when the compressor is running.
  • Compressor clutch is not moving.

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