Q: My air is blowing cold-hot-cold-hot-cold-hot...

asked by on

My air was not blowing as cold as it used to, so we put some coolant in. After that, it blew colder for about 2 hours and then it started blowing hot. Then it blew cool again, and then hot. It mostly blows warm air now, as if it does not work, but once in a while, it will blow cold air for about 5 seconds.

My car has 68000 miles.
My car has an automatic transmission.

It is possible that you have a leak in the AC system. There are pressure switches that will turn off the compressor if the pressure is too high or too low. The low refrigerant level could cause the AC compressor to cycle on and off. If you would like to have this done, a certified technician from YourMechanic can come to your car’s location to diagnose the AC system and make the correct repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My air is blowing cold-hot-cold-hot-cold-hot...

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: Upon starting my car it makes a loud hollow noise. There is also a rattling sound is coming from exhaust pipe.

Hi there. The engine may have a misfire causing the exhaust pipe to have a rattling noise as the engine is shaking. Check the fuel injectors and the spark plugs and see if they are working and if they need...

Q: When I turn on my A/C it smells like transmission fluid

The first thing to check is to see if you have any kind of engine or transmission fluid leaks that the air conditioner could be drawing in the smell of the oils into the A/C air intake. If you have...

Q: 2007 jeep liberty. Noticed no a/c soon realized power steering loss. Battery light came on. Fluid all over engine bay. Need help

Check to see if the drive belt is intact. If it isn't that would explain the loss of power steering, AC and the battery light. If the belt is intact, then something must be locked up, preventing the other parts...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...