FAQ: How can you tell if a fan clutch is bad?

What are the symptoms of a bad fan clutch?

Symptoms of a Bad or Failing Fan Clutch

  • Vehicle overheating. One of the first symptoms that is commonly associated with a bad or failing fan clutch is an overheating engine.
  • Excessively loud cooling fans. Another common symptom of a faulty fan clutch is excessively loud cooling fans.
  • Decrease in power, acceleration, and fuel efficiency.

Can you drive with a bad fan clutch?

If your fan clutch is frozen on full lock (and i would guess it is, since it roars all the time and has bad mileage and no balls), i would say it’s fine for you to drive it for the time being. If the clutch wasn’t locking up anymore, now that would be different (the fan wouldn’t cool properly).

Should a fan clutch spin freely when cold?

6/25/12 5:01 p.m. Engine cold and off. If you can spin the fan freely, it is bad. If good there will be considerable resistance.

What does a failing fan clutch sound like?

Symptoms of a Bad Fan Clutch

First the and most common way a fan clutch can fail is the clutch shoe inside the unit can get stuck and not disengage causing the fan to lock up on the input shaft which will permanently engage the cooling fan which will be accompanied by a noticeable roaring sound.

What temperature should a fan clutch engage?

Fan clutch should engage at approximately 190-195 degrees F.

When should I replace my fan clutch?

According to Hayden, here are some signs your fan clutch might need replaced:

  • Fan spins excessively when engine is stopped (three or more times when hot engine is shut off).
  • Poor A/C performance at idle or low vehicle speeds.
  • Fan speed does not increase when engine is hot.
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How much does it cost to replace a fan clutch?

For a clutch fan replacement, you will pay between $140 and $400, depending on the kind of car you own. The labor should cost you $70 to $130, while the parts can start at $75 and go up to nearly $300.

Does a clutch fan run all the time?

With a fan cluthc your fan will rotate constantly regardless. The clutch engages and locks the blade to it so that it spins faster than normal the hotter that it gets. The only time that your fan will not spin is when the motor is off. It is a common misconception that the fan will only spin when the clutch engages.

Does the fan clutch affect the transmission?

That fan has nothing to do with your transmission problem. Now, if you were having problems where the transmission was running too hot then I would say yes, a fan not operating properly can and will cause a transmission to overheat.

How do I know if my fan clutch is reverse rotation?

If the pulley uses a V-belt, direction will always be clockwise. If the pulley is poly-grooved and in contact with the grooved side of the serpentine belt, direction will be clockwise. If the pulley is flat and in contact with the backside of the serpentine belt, direction will be counterclockwise.

Is a flex fan better than a clutch fan?

For high rpm use, flex fans are considered an upgrade over clutch fans. They can be a good choice for modified vehicles turning 6,000 – 8,000 rpm. Advantages include: They move more air for better cooling.

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Do radiator fans always spin?

This unit spins when the engine is running, and it always spins at the same rate as the engine. The faster the engine is running the faster the fan will spin. If you find that your vehicle is not cooling off properly, the radiator fan might be the culprit. You can replace the fan with a new unit.

Can a fan clutch be repaired?

While there are times you can repair the fan clutch, in most instances it’s best to replace it. Your engine may have a hard time cooling down (overheating) or heating up since the fan clutch isn’t working.

Should you replace fan clutch with water pump?

A worn out fan clutch can damage a new water pump, and a worn out water pump can damage a new fan clutch. These two connected, vital cooling components must be be replaced at the same time. The water pump moves the water and the fan clutch moves the air.

Why is my clutch fan so loud?

When the clutch shoe inside the part gets stuck, it fails to disengage. This causes the fan to lock up on the input shaft. When the fan is locked up, the cooling fan is permanently engaged. This causes the roaring noise.

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