Skip the auto shop - Our mechanics make house calls

Q: AC stops blowing cold air

asked by on

My AC will be working and then suddenly stop cooling. It still blows and I can hear the compressor pulling on the engine. The next time I get into the car it cools again.

A: I have seen this before. It is not a very c...

I have seen this before. It is not a very common issue but it does happen. Behind your dashboard there is a radiator like part that circulates refrigerant into your vehicle. The air blows through this radiator like part called an evaporator. This is the air you feel in your vents. On a rare occasion the evaporator gets a restriction of some sort, this restriction causes the refrigerant to slow down even more and freezes the evaporator. Since it is now a block of ice, air will not flow through it like before and it stops blowing cold air out of your vents. Once the vehicle is turned off, the part unfreezes and it works great again until it freezes. The common repair is to replace it along with some other components like the expansion block and dryer. This can be a complicated job that may require dashboard removal on some vehicles. I recommend having a certified mechanic come and inspect your vehicle's AC system to see what repairs should be made.

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・Save up to 30%

Get a quote

What others are asking

Q: Recommendation on buying an old Toyota

Yes, I got rid of mine a couple of years ago. It was a Toyota Corolla SR5. That sucker had 350,000 miles and a 5-speed tranny. It ran like a clock. It's rusted now because they didn't put zip primer...

Q: how to replace window regulator

You first have to remove door panel. You will have to knock out the center of the 5 rivets holding regulator to door and the 2 rivets holding the regulator to window track using a small pin punch. If you...

Q: Some a/c fans aren't blowing air

It sounds like your mode door actuator may have failed. The mode door actuator is responsible for controlling the mode door. The mode door is a door inside your dash that will open and close to certain points to guide...

Related articles

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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...