viscous fan

[paulp]

Dear all

The temperature on my truck, when driven hard, will rise to just over half way.

Would a failing viscous fan cause this or would the fan only really help cooling at low speed.

Going away on hols soon and I would like to get it sorted

thanks in advance

paulp

 

[RJL Services]

mine runs half way in this weather when i climb a hill but on the flat about quater is the norm for mine:augie

 

[panelbeater]

i think that is normal,if its got some resistance when turned by hand thats ok.
when you start engine it howles for a bit but as it works it gets quieter.
mine stays just under half but creeps up towing uphill.

 

[solarman216]

If your fan is working as it should then the "roar" you get on startup for a short while should also happen when the temperature rises, with the window down I can certainly hear mine, if you do not get this then the fan could be suspect, check that the spindle in the center is not seized, Rick