a great question.....
take a old cooling thermostat apart, (cut it up) what is there. like the other posted did to his IAC and what i did to my ISC.
body
spring
valve.
wax pellet, in the olden days, my old old 50s car has a bellows, ether bellows chamber.(rare today, )
wax is a substance, (nice and non toxic too) that expands like crazy hot, and is predictable (math equations)
the wax expands and the valve closes on the IAC. (cold its wide open, sucking huge air volumes at 20 " vacuum)
the cooling thermostat works opposite to that.
the ISC is not therma acting at all the ISC is pure electric. (modulated too)
posted to see both photos if IAC and ISC all cut up , on one post. above and here.
![[Image: IAC-exploded2w.jpg]](http://www.fixkick.com/sensors/tests/IAC-exploded2w.jpg)
take a old cooling thermostat apart, (cut it up) what is there. like the other posted did to his IAC and what i did to my ISC.
body
spring
valve.
wax pellet, in the olden days, my old old 50s car has a bellows, ether bellows chamber.(rare today, )
wax is a substance, (nice and non toxic too) that expands like crazy hot, and is predictable (math equations)
the wax expands and the valve closes on the IAC. (cold its wide open, sucking huge air volumes at 20 " vacuum)
the cooling thermostat works opposite to that.
the ISC is not therma acting at all the ISC is pure electric. (modulated too)
posted to see both photos if IAC and ISC all cut up , on one post. above and here.
http://www.fixkick.com