Skip the auto shop - Our mechanics make house calls

Q: AC not working at idle

asked by on

My AC stops working when I am idling and not moving. My car begins to overheat fast.

Your symptoms lead me to believe that you may have a problem concerning your cooling fans at the front of the vehicle. While the engine is running and the car sitting still, both fans should come on when the air conditioning is requested. While the vehicle is moving, more likely at highway speeds, the air hitting the front of the car is forced through air dams and through the radiator and a/c condenser, which aids their processes. Have a trained mechanic, like the ones here at YourMechanic, come out for a close look at your overheating issue and determine the best remedy.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: On the thermostat housing on a 2013 Journey, which way does the gasket end seal to? Does it seal to the part connected to the hose?

Installing a thermostat upside down will cause the engine to overheat. Although not impossible, the thermostat will fit better one direction than the other. The coiled or spring loaded end needs to go into the engine block. The end with...

Q: car overheating 225

Normal engine operating temperature is up to 225 degrees. As long as you are not over that value, the engine is not overheating. Intermittent cabin heat means there is an obstruction in the coolant flow and that obstruction can be...

Q: My A/C doesn't get very cold

There are several things that can cause an air conditioner to cool inefficiently. Some of these causes would include an oversaturated moisture filter, a compressor malfunction, a restriction in the system, A/C fan inoperative, lots of debris inside the condenser,...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...