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> Thermostat Question, How does it work?
pbanders
post May 4 2022, 09:16 AM
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While I may have done a transistor-by-transistor analysis of the ECU and used pSpice to simulate the injector driver circuit, I've never done squat with my thermostat system. Basically, it works, so I leave it alone.

But I'm curious, how do the bellows work? When the car is hot, the bellows expand, and the cable tension is released. Is there an internal spring? Something about wax? Help me out here, thanks.
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pbanders
post May 19 2022, 11:08 AM
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Ian Karr is correct, the working fluid is alcohol. Richard Atwell has an excellent page on the details of the thermostat, with all the info you'll ever need.

https://ratwell.com/technical/Thermostats.html

Oh, and I received my new thermostat from Awesome Powdercoat, a very nicely made component. As my existing thermostat seems to be working fine, this new one will go into my spares cabinet - which is getting fuller all the time.
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