Skip the auto shop - Our mechanics make house calls

Q: My ac is blowing but not cooling

asked by on

My ac is blowing but not cooling

My car has 130000 miles.
My car has an automatic transmission.

A: Hello. An AC that does blow cold air can be...

Hello. An AC that does blow cold air can be caused by many things. A few common causes are low refrigerant, a faulty pressure switch, or a bad compressor. The component responsible for blowing air is the blower motor, however, it is not responsible for making the air cold. The actual AC system that is mostly installed in the engine bay is what generates the cold air. If the refrigerant the system uses runs low, perhaps due to a leak, or the switch that activates the compressor fails, then the AC system will not work properly. I would start by verifying that the compressor is in fact coming on, and then test the pressure of the AC system to see if it may be low and in need of refrigerant. Keep in mind that if the system is in fact low, you will have to determine what caused it to run low in the first place. To have this checked, have a local expert, like one from YourMechanic, come to your home or office to diagnose the A/C system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: 2005 Dodge Ram 1500 Cranks but won't start

Hey there, thanks for writing in about your 2005 Dodge Ram 1500. Your symptoms sound very similar to a vehicle with a faulty engine position sensor. Typically the crankshaft position sensor will fail before the camshaft position sensor will. If...

Q: AC not blowing cold air

Hi. There are many different possibilities here. Most A/C systems stop working due to switches in the system failing or a bad clutch on the compressor. You may have also just overcharged you’re A/C system or have a Freon leak....

Q: Safety belt and airbag warning lights on - 2010 BMW 538xi

The SRS system should have faults read out but based on your description, the seat mat sensor in the passenger is most likely the cause. The seat occupancy sensor is used in both determining air bag deployment and seatbelt pyrotechnic...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...