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4GSEDAN

IACV / EACV: How does it work?

Does anyone know how the IACV / EACV works?
More specifically: Do the coolant lines running to the bottom of the IACV/EACV determine the operation of the valve within it (similar to FITV) or does the ECU determine this and then send a signal to the IACV/EACV?
Type-S EF

The ECU controls the IACV,  the coolant lines are just there to keep it hot so it stays cleaner, assuming you dont have a catch can oil vapor would build up in it and clog it up, just like cleaning your eye glasses with hot water will keep them from fogging up regardless of how humid the room is.
~Sp33~

I'm fairly sure that the coolant melts a wax inside the unit which causes it to expand or contract like a thermostat, allowing air through.
Icarus

~Sp33~ wrote:
I'm fairly sure that the coolant melts a wax inside the unit which causes it to expand or contract like a thermostat, allowing air through.


that would be a FITV

IACV is a valve with a coil and works in the same way a fuel injector works (with regards to the movemnt)

3 wire IACV uses a magnet....
4GSEDAN

Sorry, for the late response. Thanks for the info.

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