Skip the auto shop - Our mechanics make house calls

Q: Overheating when fans off

asked by on

If the air conditioning fans aren't on, my car overheats.

A: Hello! It sounds like the system is working...

Hello! It sounds like the system is working properly. The fans are designed to turn on when the engine reaches a certain temperature. However if the fans do not work properly the vehicle will overheat. If the vehicle has an overheating issue I recommend that a technician check the performance of the fans to ensure they are coming on at the proper temperature. If they don't, you may have an issue with the fan itself, fan relay, or the coolant temperature sensor. A technician, such as one from YourMechanic, will be able to inspect the said components for faults and help determine why your car overheats.

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・Save up to 30%

Get a quote

What others are asking

Q: Vehicle made noise and overheated

Hello. Generally, that noise could be from several issues related to losing coolant. First, visually inspect the engine compartment for external damage to the radiator; the engine fan may have been hitting it. You can fill up the coolant to...

Q: Opinion about Tesla

They are fast as lightning cars. I just met a guy who has one, and I was talking to him about the car and we gave it a ride. They are zippy, fast cars but they are pretty expensive....

Q: Can't get a/c system to charge after replacing new components.

The A/C condenser is most likely clogged. The condenser should of been flushed if the compressor was bad since it may have pushed debris into the condenser. I would try to cut open the old orifice line to see if...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...