How To Tell If Fan Clutch Is Bad?

The engine works as the power source for your engine. It is also interpreted as the motor that converts one form of energy into mechanical energy. Heat engines depend on the various thermodynamic condition to work. Internal combustion is one the example of a heat engine. In which internal combustion of fuel rapidly motion. So what we have drawn from the engine is that is performance and provided things are of good quality then engine encounters with the performance. But if the Quality of products with the help of that we can achieve more performance. If it is cheap and is of third quality it can cause a breakdown of your engine.

And in one of those is the fan at the radiator, which also plays a necessary role in it. That is depending on the fan clutch because if it stops working. That directly affects you cooling system of your engine. Also, we are discussing the topic of how to tell if a fan clutch is bad. How to fix it properly.

Symptoms Of Bad Fan Clutch

Many symptoms are indicating a bad radiator fan clutch. And also they are used during inspection of the fan clutch.

If you have a bad fan clutch, in that case, can easily get the symptoms. Because it directly affected your engine or its performance. Just pay attention to engine noise and its behavior and diagnose the type of problem. Because a correct diagnosis leads to effective and reliable repair.

1. Engine Overheating

If your engine gets overheated at low speed and especially when stopped at one place. Then majorly the cause behind it is the radiator fan stops working because of the failure of the fan clutch. At high speed, it does not affect most because at high speed you get the ample air thrust that cools your engine. But at slow speed, it does not get the proper air to cool the engine.

2. Insufficient Heating

In winter, the opposite problem happens that the engine did not get the proper heating. If clutch sizes then your fan remains engaged all the time and has too much cooling to the engine. 

3. Excess Fan Noise

Maybe your fan clutch has bearing damage and at high speed, it gets noisier. That lead to radiator fan flex while rotating and also leads to fan damage. 

4. Fan Clutch Leaking

 If you have a weak fan clutch and if your fan clutch leaking silicon from its housing. That shows the Faulty clutch pack of your fan clutch.

How To Tell If Fan Clutch Is Bad?

There are many symptoms to tell the clutch pack of your radiator fan is bad. And keep your engine off, check the few things to notice about the clutch pack of your radiator fan. Also, we are here to discuss how to tell if the fan clutch is bad. 

1. Spin The Fan

Electronic types of fans are free to move but clutch fans take little effort to move. If it moves more than three times and does not move at all that means you have a bad clutch.

2. Flexing Of The Fan

If the fan moves forward and backward too much and flexes during rotation. That indicates the seized bearing of the fan clutch.

3. Inspect For Leaks

If there is leaking of heavy silicone oil from inside of the clutch pack. That ensures the soft movement of the clutch pack during the fan engages. If it is leaking then the clutch leads to failure and gets weakened.

4. Check Fan Speed

The radiator fan engages at a fixed amount of temperature for cooling the engine and after a certain speed, it disengaged due to speed limiting from the clutch pack. And if engagement and disengagement give a loud noise or get delayed. That shows the bad clutch of your radiator fan.

5. Bad Relay Switch

If you are using the electrical radiator fan clutch then maybe there is the possibility of a bad relay switch. Maybe it did not work properly and restricted the fan movement.

Also, The some other symptoms after that you have to change your radiator fan clutch, and if we summarized all the symptoms for the bad radiator fan clutch that follows:

  1. The fan spins excessively when the engine is stopped.
  2. Poor A/C performance at idle or at the very low speed of the engine.
  3. As the engine gets hot Fan speed does not increase.
  4. Fan blade tip wriggling more than 1/4-inch front to back.
  5. The fan turns roughly or does not turn at all.
  6. Excessive fan noise because of the failed bearing.
  7. Excessive vibration that increases with engine speed.
  8. Leaking fluid or oily build up around the bearing or thermal spring.

Can You Drive With A Bad Clutch?

No, you cannot drive with the bad clutch pack because it leads to the engine overheating. And that is very bad for your Vehicle’s engine health. 

Yes, it did not affect your engine at high speeds because at high speeds your car easily gets the proper amount of air thrust that will be needed to cool the engine. But at low speed you ca not get the proper air to cool down the engine.

Also, if there is a problem that is just opposite that if it is jammed and always gets engaged then in winters your engine undergo excess cooling that is harmful to your engine health. 


These are the main cause that generally harms your car suspension system. And that is only controlled by the proper maintenance and scheduled services. it also helps you more to maintain the vehicle properly and you also get the proper assistance from there. These situations are very common these days and day by day the consumption is increasing exponentially and there is the possibility of manufacturing defects, so it is mandatory to always be punctual with service logs of vehicles. This helps you to keep far from the unusual situations because it is too low cost than repairing any part or replacement of that part and that makes you a good consumer.

I hope at last you will be with your proper solution and also with the proper understanding of how to tell if fan clutch is bad. How to fix its issues and how it works.

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