Why does my AC blow cold only when driving?

Why does my AC blow cold only when driving?

There can be two possible reasons why your A/C is only blowing cold air at high speeds. One is that your condenser fan(s) is either not working, or is worn out to the point that it can’t spin sufficiently fast to bring enough air through the condenser. It is easy enough to check to see if the fans are working or not.

Why does my car air conditioner get warm 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 AC get colder when I accelerate?

Your air conditioner may be working but not at it’s intended power / efficiency. Normally car AC systems are built so that the higher the engine speed (RPM) the faster the AC compressor turns. So more power applied to the engine means more power applied to the compressor, which results in colder air.

Why does my AC not blow cold when sitting still?

Blocked or Broken Condenser 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.

Why does my AC in my car only work when I’m driving?

Why does my AC get warm while driving?

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.

Why is my air conditioner blowing out hot air?

If your AC is blowing hot air, the thermostat may have been accidentally set to “heat.” If this is the case, it’s easy to fix on your own. Simply flip the thermostat setting back to “cool” and see if the air conditioner begins to blow cool air again.

What to do if your air conditioner is blowing cold air?

Simply flip the thermostat setting back to “cool” and see if the air conditioner begins to blow cool air again. Additionally, you want to make sure that the batteries are working and that the temperature is not set too high. Remember, the “auto” function only utilizes the fan when air is being heated or cooled.

Why is my air conditioner running low on coolant?

One of the main causes of a malfunctioning air conditioner is low refrigerant. If you have a worn service valve, loose joints, or poor assembly, you could have undercharged or overcharged refrigerant. The Fix: Refrigerant (aka coolant) is highly dangerous.

What happens if the AC compressor is not working properly?

AC compressor has only 1 job: to compress the freon. Fully compressed freon will undergo full expansion, and will fully cool down the cooling coils. If the AC compressor doesn’t do its job well and freon is not compressed fully, the freon expansions will also be insufficient.