Quote:
Originally Posted by Old Tele man
...would co$t more, but an electronic thermostat (controlled by ECU) would get the job done much better! (servo-mechanical flow control or electric pump control)
...it could hold the flow totally off until it's actually needed, and then only pump or pass just enough coolant to keep thermal equilibrium.
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It's been a long time, but I remember pan-testing a thermostat on the stove. I seriously doubt you would be able to detect any cooling performance increase from a servo-actuated thermostat as I recall the spring thermostat nearly jumped out of the pan when it opened up, and they continuously adjust pretty well if temperature drops too low. They are fast-opening on warmup and maintain low enough flow to stay at their design temperature pretty well. An old, tried-and-true design not likely to be replaced until our vehicles no longer need liquid cooling systems.