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Relay to turn on AUX fan manually for cooling at idle 700 1989

uid 55's pic
posted by  john sargent on  Thu Sep 12 16:56 CST 2002
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last visit: Wed Oct 22 09:07 CST 2014
[RELATED]

Why don't you install a relay (to operate the electric cooling fan) which is operated by both the sensor in the radiator and a switch for the driver? When I had a Volkswagen Dasher many years ago I found the temperature switch (which directly operated the electric cooling fan) had a short life. To prolong the life of the temperature switch, I added a relay which the coolant switch operated. The relay in turn, operated the cooling fan.

The electric cooling fan on the Dasher was the only fan and operated much more than the electric cooling fan on my Volvo. Since the Volvo also has an engine driven fan, the coolant temperature never rises enough to make the coolant temperature switch close and operate the electric cooling fan.






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