Q: AC stops working occasionally

asked by on

Hi. The AC in my car is not working correctly. On trips that last about an hour or more, it stops cooling and barely works. Occasionally, when it doesn't work at all, it sounds as if it is working pretty hard. Restarting helps sometimes. Usually, it takes about half an hour for it to be turned off so that it could start cooling again. The car has a mileage of about 115,000 miles. How can I fix this? Thanks.

Hello. This is a common problem on this vehicle. It is usually caused by a failing actuator under the dash. It can also be one of the temperature sensors but that is not as common. I usually install a scan tool to monitor what the AC module is requesting. If it starts to get hot for no reason I then check the actuator to see if it stops holding the blend door in the right position. If not, then the actuator needs to be replaced. If the actuator is fine then the sensors need to be checked. If those are also fine I reprogram the control module and then replace it if it will not hold the programming. If you need to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your AC system and make the correct repair(s).

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. AC stops working occasionally

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: Air Conditioning is not doing very much at all

Hello! While not having A/C can be uncomfortable, the problem is repairable. If the system is out of refrigerant, there is a leak present. With any luck, the last technician that replaced your compressor added A/C dye to...

Q: Fuel Gage

Hi there. This is a problem likely related to your fuel tank sending unit. The fuel tank sending unit is a small float type component (or sensor) inside your fuel tank that measures the level of the fuel inside the...

Q: computer will not talk to altenator 2011 vw routan

Hi there. Each mechanical and electrical system in today's vehicles are monitored and in many ways, controlled by a series of sensors and electrical connections that send and receive data from the ECU in order to work effectively. The alternator...

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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.