Why does my car AC sometimes work and sometimes not?

Intermittent cooling is often caused by the components of your vehicle’s AC system freezing up. Typically an iced over evaporator is the culprit. There may be numerous issues causing the icing—from a dirty cabin air filter to a blocked evaporator drain or an overcharged system.

What are signs that your AC compressor is going out?

Some of the signs of a bad A/C compressor are as follows.

• 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.

Why is my car air conditioning suddenly not cold?

Air Conditioning Not Working in Your Car? 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.

Why doesn’t my car AC work when it’s hot?

The hotter it is outside, the harder the air conditioning in your vehicle has to work. Rising outside temperatures put extra strain on your entire vehicle and its cooling system, from the battery and belts to hoses and fluids, requiring each part to work overtime to keep your vehicle cool.

What are the signs of a bad AC capacitor?

Here are some common symptoms of a bad AC capacitor.

1. AC Not Blowing Cold Air. An air conditioner that doesn’t blow cold air is one of the first signs of a problem many homeowners notice.
2. High and Rising Energy Bills.
3. Humming Noise.
4. Old HVAC System.
5. AC Turns Off On Its Own.
6. AC Doesn’t Turn On Immediately.
7. AC Won’t Turn On.

What are common problems with air conditioners?

Here are 10 common AC problems and their possible solutions:

• Air Conditioner Is Not Turning On.
• Air Conditioner Not Blowing Cold Air.
• Air Conditioner Freezing Up Outside Unit.
• AC Refrigerant Leak.
• Air Conditioner Making Noises.
• Frozen Evaporator Coil.
• Electric Control Failure.
• Air Conditioner Leaking Water Outside.

How do you know if your AC relay is bad?

Signs of a Bad or Failing AC Compressor Relay

1. Inconsistent cooling. The AC compressor is powered by the relay.
2. AC compressor is not turning on. One of the most obvious signs that the AC relay may have a problem is that the compressor is not coming on at all.
3. No cold air.

How do I know if my AC needs recharged?

1. Your A/C is Blowing Warm Air. One of the most obvious symptoms of low Freon levels is if your air conditioner is blowing warm or room temperature air.
2. Listen For The A/C Clutch to Engage.
3. Visible Refrigerant Leaks.
4. Your A/C is Blowing Warm Air.
5. Listen For The A/C Clutch to Engage.
6. Visible Refrigerant Leaks.