E30 unplugging icv does nothing. A couple things I've tried to troubleshoot the ICV: Sep 30, 2012 · Nothing really does - cold engine, temp sensor disconnected, temp sensor shorted, O2 sensor disconnectednothing. Then check to see that the idle switch closes when the throttle arm is 1mm off the stop screw. It should simply open the ICV by putting voltage across it and letting air bypass the Jan 2, 2011 · I have the motronic system with the three pin icv (idle control valve). With lots of throttle I could keep it running at 3k or above, but it would die at lower throttle openings. Having trouble with my idle. If unplugging your ICV does nothing, and it's already fluctuating like that, it sounds like your ICV is bad. Thanks again! Oct 14, 2014 · Hey Everyone, I was planning to tune up my own car this summer, which means I have around 6 months to gather the information required. ) Reply reply itpissss • When i unplug it, it climbs to 3k then down and up again, then plug it back in and it returns to normal Reply reply atmh2 • Sep 24, 2018 · So long as the spring is working in the ICV then it probably works. Feb 3, 2020 · The ICV has two sets of windings that are controlled by a PWM signal from the DME on pin 1&3, if one side is 25% the other will be 75% and why the voltage shows different on those two pins. 1. vo p3ta qk8md gtmmh vdxg8lk hfvw yy mzx 6rzf t7e