At what point should there be coolent flowing through the fast idle valve, if I understand it right it should flow in after the car has warmed up and the thermostat has opened. I have removed both lines, the one going directly into the fast idle valve and the one going into the bottom of the throttle body, which I was guessing was a return line, to try to see if the IACV was letting coolent circulate at all. I couldn't get coolent circulate, is it supposed to and at what point? If it is not circulating is this an indication that the IAVC isn't funtioning properly? Thank you for the help.