Why is my car AC blowing cold and hot air?

Why is my car blowing hot and cold air?

Low Coolant Level

The coolant (usually a mixture of water and antifreeze) in your engine doesn’t just work to keep the engine from overheating: It’s also the source of heat supporting the heating system. If there isn’t enough coolant in your system, the heater core will blow cold air into your car.

Why is my car blowing hot air on one side and cold on the other?

Blend door actuators are the most common reason for the car air conditioning to blow cold air on one side and hot air on the other. They can be diagnosed with an advanced scan tool. The scan tool can tell if the blend door actuator should be in a different position than commanded.

Why does the AC give off cold air and then warm for some time and then again cold?

If your A/C flip-flops from hot to cold and back again, your expansion valve could be failing. The expansion valve removes pressure from liquid refrigerant to allow expansion from a liquid to a vapor state in the evaporator. If the valve is blocked, the refrigerant flow could be restricted or could be too unrestricted.

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How do I know if my car AC compressor is bad?

5 Signs & Symptoms of a Bad AC Compressor

  1. Your AC Is Making Growling, Screeching, or Clattering Noises. Electrical failures in the compressor will make your AC emit unusual clunking or rattling noises. …
  2. You Have a Hard Time Getting Your AC to Start. …
  3. Your AC Stops Blowing Cold Air. …
  4. Circuit Breaker Problems. …
  5. Diminished Airflow.

How much does it cost to fix a blend door actuator?

The average cost for HVAC blend door actuator replacement is between $309 and $355. Labor costs are estimated between $178 and $225 while parts are priced at $130. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

How much does it cost to replace a blend door actuator in a car?

The average cost ranges from $100 to $400 for an HVAC blend door actuator replacement in your vehicle.

How do I fix my car AC not blowing cold air?

#1 Your Car’s AC Needs a Recharge

The most common cause of a vehicle’s air conditioner not getting cold enough is that it needs to be recharged. You can recharge your refrigerant by yourself, but to save time and make sure the job is done correctly you should make an appointment with your local professional auto shop.

Why is my car AC short cycling?

Refrigerant leaks: Loss of refrigerant through leaks will cause multiple problems for an air conditioning system. One of the major signs that a leak has occurred is when the AC begins to short-cycle. Since low refrigerant is an immediate threat to a compressor, you need repair specialists to fix this right away.

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How often do car AC compressors go bad?

The answer depends on age and how often you use your car ac. As you drive your car and over a long time, the AC compressor will start malfunctioning. However, you can expect your AC compressor to last 8-12 years.

Can I drive my car with a bad AC compressor?

If you are a driver and always wonder if you can drive the vehicle without or with a bad AC compressor, you are not alone; many drivers ask the same question. But the answer is yes, you can drive with a bad AC compressor, although it depends on what you want from the compressor service provider.

How can you tell if you need a new AC compressor?

Four Signs Your Car’s AC Compressor Is Going Bad

  1. Odd Sounds. You might hear some strange noises when you flip on your vehicle’s air conditioner and if you do, it’s probably the compressor. …
  2. Hot Air. The whole point of turning on your vehicle’s AC is to get cold air to come through the vents. …
  3. Fluid Leaks. …
  4. Stuck Clutch.