Re: [Amc-list] Howell TBI in a 63 Classic...

[Tom Jennings <tomj@xxxxxxx>]

re: fan thermostats

I think the "best" solution is a microprocessor that looks at the 
factory temperature sensor and Does the Right Thing. I even wrote the 
code for an Arduino ($39) board. Never got around to trying it out.

It could anticipate warmup, PWM speed control the fan, do 5 min cooldown 
after turn off but only if hot enough, etc. Histerysis, proportional 
speed, etc.

It even self-calibrates; the factory temp sensors are all over the place 
so it's necessary. From a cold engine, you enter CALIBRATE mode with a 
switch, then:

When temp reaches rated thermostat temp (you look at the guage, use a 
thermometer, etc) you press the CAL switch. That's the low set point.

When temp reaches maximum desired operating (you again) press the switch 
a second time. That's the hot setpoint.

It then proportionally controls the fan within that range.

Too many projects.
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