Q: Thermostat problems

asked by on

The A/C in my car blows only hot air. The thermostat was working great until last week. Now when it gets to 80 it starts blowing the hot air. What is causing this and can it be fixed?

There are a few common causes for the AC blowing hot air, the most common is that the vehicle is low on refrigerant, other causes could be the blend motor has failed or the compressor is not working properly. A qualified technician like the ones at YourMechanic will have little trouble diagnosing this AC issue and performing any required repairs.

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. Thermostat problems

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: Hi, I have a 2003 bmw X5 3.0i petrol. 2 problems. 1. abs trifecta lights on, when i plug in my own (cheap) diagnostic tool it onl

Hello and thank you for contacting YourMechanic. The code for your BMW P1619 is referring to the thermostat sensor. Check the thermostat sensor harness for an debris, looseness, and corrosion. If the sensor looks good, then the thermostat needs replaced...

Q: I have a 2002 passat 2.8. I had the fuel pump replaced this morning and refueled and the car wouldn't start. Waited 2 hours and it

If you just replaced the fuel pump and still have stalling or no start issues then replace the fuel pump relay in left side of dash in aux relay box.

Q: Green AC oil coming out of the condensation line after recharge

The green fluid coming out of the drain tube is dye that was added to the refrigerant to locate leaks in the system. The failed component would be the evaporator. Please check this web site for more information and a...

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 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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...