Q: My car cooling fan works for a few seconds when I turn the car off, not on when the car's on. Is the temperature sensor bad?

asked by on

My car cooling fan works for a few seconds when I turn the car off, not on when the car's on. Is the temperature sensor bad? The radiator also leaks

My car has 136000 miles.
My car has an automatic transmission.

If it doesn’t run for more than about a minute, that could be a normal situation. The fan is triggered by temperature at the cylinder head, and when the engine is off and the coolant isn’t circulating, the heat rises to the top of the engine. If the car is fully warmed up and it’s a hot day outside, the fan may come on for a short time when the car is off. If it runs on and on, it may be a different matter and you will want to have it checked out. The leak, should concern you. Left to themselves, things always go from bad to worse and it could get worse at a very inconvenient time. If you contact Your Mechanic, they can send a technician to your home or office to check out your Honda and let you know what can be done for it.

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. My car cooling fan works for a few seconds when I turn the car off, not on when the car's on. Is the temperature sensor bad?

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: Engine overheats when I stop

If the fans failed completely, they would likely not turn on at all, even when the car is first started. The fans are controlled by coolant temperature sensors that monitor the coolant temperature, and if one of these temperature sensors...

Q: Q: Leak in radiator.

I would ask for help from one of the mechanics at YourMechanic. They can come to you and perform a pressure test of your cooling system and determine if there is a leak in your radiator that needs to be...

Q: Q: I have the P0420 code

Hi there, thanks for writing in. Code P0420 has to do with the catalytic converter in your vehicle. The code will need to be diagnosed by checking the vehicle for exhaust leaks, O2 sensor problems, or the wiring to the...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...