Anonymous asked in Cars & TransportationCar MakesToyota · 4 weeks ago

radiator fan always on while im driving ? Overheating ?

2005 toyota camry. Is my car overheating ?


Its on while im in park too. I could stay parked with the car turned on for an hour n the radiator fan would still be running.

12 Answers

  • 2 weeks ago

    Nope! That is just the car's computer automatically cooling your car to make sure that it DOESN'T overheat. With the fan on, your car is in good shape! 

    You would know if your car would be overheating. You wouldn't be able to drive!

  • don r
    Lv 7
    3 weeks ago

    The fan cycles on and off as needed. Your temperature gauge will tell whether or not the engine is overheating. What you can do is look in the radiator to see if it needs filling, but do this when the engine is stone cold. If the radiator is not full refill it, find the leak and fix it....I't suspect the water pump if you have more than 100,000 miles.

  • 3 weeks ago

    #1. Make sure the plastic coolant recovery bottle is at least 3/4 full when the engine is cold. If it's not, do not put water in it, use only Genuine Toyota Antifreeze for the year and model of your car. It comes premixed in the one gallon bottle. You can tell if your engine is overheating by the temperature gauge on the dash. If the coolant recovery bottle is at least 3/4 filled when the engine is cold and the temperature needle on the dash is pointing straight up and the fan still is in all the time with the engine running, take your car to a Toyota dealer to have the *fan switch solenoid changed.

  • zipper
    Lv 6
    4 weeks ago

    How do you know that the fan is always on? Do you drive around with your head under the hood. Plus if you have a mechanical fan it is suppose to be on any time the engine is running. If it is electrical fan you may be low fluid or have a bad sensor unit, any garage can check that for you.   Also if the car is not moving the engine runs hotter so the fan will stay on even if it is an electric fan that is working correctly Start by checking the fluid levels in the system when the engine is cold and OFF!  If it was over heating the engine most likely would of died by now any way.

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  • 4 weeks ago

    It could be low on coolant or possibly a bad heat sensor. Also check to see if bugs on the radiator are blocking air flow.

  • 4 weeks ago

    The radiator and condenser fans run continuously when the AC is turned on or when the climate control is set to the floor/defrost position. Even if the AC button is turned off the AC will run while set to the floor/defrost position.

    If you see the temperature gauge fluctuating up and down it means the coolant is low in the radiator and you have an air pocket in the cooling system.

    Always check the coolant level in the radiator...not just the reservoir tank.

    Source(s): Mitsubishi Master Tech
  • 4 weeks ago

    It's most likely the temperature sensor if the car isn't losing coolant. Easy fix. 

  • 4 weeks ago

    You have an electric fan.  They are supposed to come on when needed, which will be when there is insufficient airflow through the radiator to cool it. In normal driving the fan likely won't come on as the airflow is sufficient, it is when driving slowly such as in stop-start traffic or when stationary (such as when you stay parked with the engine running) that the fan is needed. If that's what it's doing, that's normal.

    If it's running constantly when driving at a normal road speed then either you are overheating or, more likely, the fan switch or its sensor are faulty.

  • 4 weeks ago

    Fans are supposed to operate when the car is on. It is sometimes normal for electric fans to turn on when the car is parked.

  • Anonymous
    4 weeks ago

    They are known for overheating issues. Change the coolant and see if this helps, if not you may need to take it in and change the radiator

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