| [GMCnet] Where did you put ur temp sensor for an electronic fan clutch? [message #352691] |
Tue, 10 March 2020 10:17  |
Thomas Pryor
Messages: 143
Registered: January 2011
Karma:
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Senior Member |
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Well my name has emerged too many times, so I will have to offer my input.
Let's us go back to the Thermal spring in our old Viscous clutches....What
activated it, heat from the radiator, yes?
The idiot light and subsequent temperature gauges were connected to thermal
output devices (sensors) in the engine........ BUT DID NOT CONTROL THE FAN
ACTUATION, YES?
With that as the foundation for our thoughts to activate the Electronic
Viscous Fan clutch, it makes perfect sense that we really want this new
device to act like our old Fan clutch, just more reliably, with a dash
switch over ride, and measure coolant rather than hot air. We also get
the added benefit of double the air flow (CFM).
That said, CURRENTLY when the controller sees 210 degrees coolant output
from the radiator it activates the fan. The fan will remain activated
until it sees a 15 degree drop (195).
Coolant in the radiator will fluctuate between those two temperature
regardless of the temperature gage on the dash! Just like the old days,
yes?
Thing is, we don't really know the activation points of the old bimetal
spring....... it turned on and turned off. When the dash light turned on
or the dash gauge went above 212 we changed out the Fan Clutch. We
operated, fat, dumb, but happy! Based on all my investigations and
discussions with Dick Patterson we are not going to degrade the life of any
engine. Now we just have more input data and can tweak if and when
required.
Thats my story, but I am willing to listen to any and all input.
Tom Pryor
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186
1977 23'B named "CASPER", HARDLY ORIGINAL, (455 EFI) (Pwr. Drive)
(tailgate) (rear bunk beds)
(Webasto petrol boiler) (MB Elect fan clutch) (Brake reaction arms) BUT
STILL A WORK IN PROGRESS!
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