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

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: Is there add'l cost for diagnosis?

In order to find out the reason the engine is overheating the cooling system needs to be checked to see if the thermostat is stuck, there is a coolant leak, cooling fans do not come on or there is another...

Q: Bad smell in AC vent

Hi there. This is a concern I have had a lot of experience with. Has the AC drain grommet been updated or removed? The original grommet was designed with a small slit style opening and was found to not be...

Q: Car did not come with a key-less key fob... can it be installed?

Yes, you can buy a key fob from Amazon and program it to your car. The most difficult and costly part of this process is getting the key fob programmed to the car. The most common place to get this...

Related articles

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
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.