164 Auto Trans Thermostat Valve

[Bob Abhalter <gt1300jr@domain.elided>]

Does anyone know how this valve functions? The description given in the 
CarDisc is vague and general in nature. I gather from the name that it will 
open and close at set temperatures, allowing transmission fluid to flow to 
the radiator. There is also a thermo switch screwed into the end of the 
valve body which is used to fire off the fan. Right now, I'm guessing that 
if this valve fails, no Trans fluid flows to the radiator, therefore no 
cooling gets done. The fan, however, may be running due to the temperature 
at the fan thermo switch. Sound reasonable?

Bob Abhalter
Grand Rapids MI

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