Q: AC works sporadically

asked by on

The AC in my car sporadically stops working. It usually isn't functioning when the car has started. Occasionally, it would barely work even though the light is on and the settings are on full. However, it would start working great if I accidentally hit a rock on the road. I took it to the mechanic but he couldn't solve the issue because it was functioning then. He said the the connections are good. He also had the blower motor examined and it checks out fine. Do you have any idea what might cause this?

Hello. It sounds like you have an intermittent problem. If the A/C compressor or A/C pressure switch is working intermittently, this may cause the A/C to work intermittently as well. Have a certified technician, like one from YourMechanic, come and complete an inspection of your A/C system in order to pinpoint your problem and make necessary 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. AC works sporadically

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: My car starts to run hot if I cannot maintain a consistent speed where air is moving across the engine.

Hey there, your car has an electric cooling fan. It should start automatically when the engine gets to a certain temperature or when you switch the A/C is on. In hot weather with the A/C on, the fan should switch...

Q: 2007 Ford Edge I don't no which one is the blower motor relay

Hey there. There is a 40 amp fuse and a separate relay in the engine compartment fuse box. If the problem persists after installation, or you need help having this installed, an expert technician from YourMechanic can come to your...

Q: when first started or ignition switch is turned on 2009 ford expedition starts clicking noise in dashboard

That is most likely a malfunctioning component in the ventilation controls, such as an actuator or blend door. It's actually not uncommon and thus there are quite a few reports of this "clicking". To resolve it requires a bit of...

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...