Thread: D2 Viscous Fan

http://www.aulro.com/afvb/good-oil/1...scous-fan.html

You are GOOD Kyle,,

Have an Intermittent cooling problem Viscous fan blade has seemingly good tension when cold but free wheeling at operating temp

All viscous fans will have resistance when cold as the fluid pools in the bottom overnight, hence the loud noise on startup or resistance when you turn a cold fan.

They are designed to free wheel below the set temperature that the coil spring on the front controls by closing an orifice inside, and when that temp is reached you will hear the fan cut in and feel a loss of power. AFAIK the fan on my D2 TD5 cuts in at about 94C. So maybe blanket your radiator and go for a short drive.

Unless it has been cleaned, a good test is to see if there is staining from leaking fluid in the front or rear of the fan hub or of course the blades are loose.
Regards Philip A

THANKS We live about 400 from the coast so it is hard to get in to town and a mechanic when such probs arise ...will keep trying to find solution

Originally Posted by thexprinter

THANKS We live about 400 from the coast so it is hard to get in to town and a mechanic when such probs arise ...will keep trying to find solution

By heck! Morayfield has moved a long way inland! Oh, I assume that 400 means km, not metres.