What are the symptoms of a bad fan clutch?
What are the symptoms of a bad fan clutch?
How to Tell If Your Fan Clutch Is Going Bad?
- Vehicle overheating. An overheating engine is often the first symptom that is commonly associated with a bad or failing fan clutch.
- Loose and Wobbling Fan.
- Excessively loud cooling fans.
- A decrease in acceleration, power & fuel efficiency.
How do you test a fan clutch on a trailblazer?
Raise the hood, with the engine off and cold. Reach in and spin the fan blade by hand. If it continues to spin freely for more than five turns with no signs of drag, you have a bad fan clutch.
Is a clutch fan supposed to spin freely?
The fan clutch is responsible for transferring power from the drive belt or the water pump pulley to the fan, but should it be spinning freely when cold? The viscous fan clutch will, with some resistance, spin freely when cold.
How do you test a fan clutch?
To confirm the diagnosis, start with this simple test: Spin the fan as hard as you can on an engine that has not been started that day. If the fan rotates more than five times, you can bet the clutch is bad. You should feel some resistance and the fan may spin up to three times, depending on the ambient temperature.
Can you drive without a fan clutch?
Yes, you can drive your car without a radiator fan, but you never should. Your vehicle’s cooling system is crucial to its performance, and every time your engine overheats, you cause damage.
Why is my Trailblazer so loud?
Bad or Dirty Spark Plugs: Bad spark plugs can cause the vehicle to misfire which will make it run louder. Spark plugs provide the spark for igniting the fuel in the combustion chamber, if they are not operating correctly, the fuel is not completely ignited and the vehicle will misfire or sputter.
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.
At what temperature does a fan clutch engage?
about 170°F
At what temperatures do fan clutches engage? Answer: Most fan clutches engage at about 170°F air temperature (about 180-190°F engine temperature). They reduce the temperature about 20°F before disengaging.