Which is better a flex fan or a clutch fan?
Which is better a flex fan or a clutch fan?
The clutch also limits how fast the fan can spin and only turns the fan at a fraction of the water pump speed, depending on engine speed and temperature. Select a Clutch Fan for: Flex fans don’t use a clutch and therefore operate at 100 percent of water pump speed, making them more efficient than clutch fans.
How does the clutch work on a water pump fan?
However, the fan’s clutch never fully disengages—it keeps spinning at about 30 percent of the water pump speed at all times. The clutch also limits how fast the fan can spin and only turns the fan at a fraction of the water pump speed, depending on engine speed and temperature.
What should I do if my Clutch fuse keeps blowing?
Review the Intermitent clutch operation section. Check to see if the belt is properly installed on the pulleys. check the circuit fuse first. If blown there may be a reason it has blown. If you find a blown fuse and the fuses keep blowing when the clutch engauges, then check the clutch coil to see if it might be shorting to ground.
What to do when your clutch is turning on and off?
With the Engine off, and clutch engauged as described earlier, move wires around and listen for the clutch to turn on and off. If you hear the clutch turning on and off by wire movement, then you have a bad connection some where close by.
What happens to the fan clutch at high speeds?
At low and idling speeds, the clutch allows the fan blade to turn at almost a 1:1 ratio. At high speeds, the silicone fluid within in the clutch will lose its ability to transfer the energy from the shaft to the fan clutch body (and therefore, the fan) and the fan is then allowed to almost free-wheel, removing its load from the engine.
What should I do if my fan clutch is going bad?
Silicone fluid leaking from the fan clutch would cause this problem. When the engine is off, there are a few things you can do to check the fan clutch: Spin the fan. Electronic types might freewheel, but most fan clutches should spin with a little effort.
How does a non thermal fan clutch work?
Non-Thermal Fan Clutches. Non-thermal clutches operate solely based on the shaft speed of the water pump. At low and idling speeds, the clutch allows the fan blade to turn at almost a 1:1 ratio.
How does a torque limiting fan clutch work?
A torque-limiting fan clutch reacts to engine speed. A centrifugal valve opens to allow the flow of heavy silicone fluid, locking the fan blades to the pulley. At idle and low engine speeds, this fan clutch is fully engaged, gradually disengaging as engine speed increases.
