Nicholas Dang Posted June 12, 2011 Report Share Posted June 12, 2011 Hi guys I've got a V5 Possumlink (WRX99R - on the chipset) that I plugged into my MY00 wrx (not STI) to tune. My tuner and I came across a problem where the Link is unable to adjust the IACV. *This was tested by plugging in the stock ECU to test if the IACV was working* When the Link is plugged in, the IACV does not move (makes noises but the rod does not move at all) which causes the idle to sit at 1800-2000rpm on idle. Can it be that the LINK is faulty? Or are there settings that we can change to fix this. Thanks in advance. Nick Quote Link to comment Share on other sites More sharing options...
Simon Posted June 12, 2011 Report Share Posted June 12, 2011 It is likely if the idle is this high the ECU has locked idle control out. If you can load the engine up and get the RPM under 1500 there is a chance the idle will then come right. This is assuming that the TPS is reading correct at closed throttle. Failing that it could well be a damaged ECU. Quote Link to comment Share on other sites More sharing options...
Bart Oates Posted June 12, 2011 Report Share Posted June 12, 2011 Is it possible to use a ICS (solenoid)on the Link G1 ecus? If so how would this be wired in? Quote Link to comment Share on other sites More sharing options...
Nicholas Dang Posted June 12, 2011 Author Report Share Posted June 12, 2011 Simon: Is there any way of unlocking idle control?? When you say load, do you mean drive the car? If this fails, is the ECU repairable? Thanks Quote Link to comment Share on other sites More sharing options...
Simon Posted June 13, 2011 Report Share Posted June 13, 2011 You need to slow the motor down. By putting load on to it with the throttle closed. You can load it up on the clutch. You might be able to take the stepper out and wind it closed. Also check your idle hot and cold numbers. It could be worth lowering these. Quote Link to comment Share on other sites More sharing options...
Simon Posted June 13, 2011 Report Share Posted June 13, 2011 As to the question on if a solenoid can be used it depends on the ECU. Plugins designed for a stepper can not control a solenoid. However all wire in ECUs can. Quote Link to comment Share on other sites More sharing options...
Nicholas Dang Posted June 15, 2011 Author Report Share Posted June 15, 2011 I tried slipping the clutch to slow the idle down but it didn't seem like make a difference. The only way I was able to get the idle down to 1000rpm was to use the stock ecu until the idle was about 900-1000rpm. I then Disconnected the idle stepper motor. Plugged the Link in and left the idle stepper motor disconnected. It doesn't seem like the Link can control the idle. Quote Link to comment Share on other sites More sharing options...
Simon Posted June 16, 2011 Report Share Posted June 16, 2011 Sounds like you could have a busted ECU. We can still service these if you get it back to us. Quote Link to comment Share on other sites More sharing options...
Jose Andrinich Posted July 30, 2013 Report Share Posted July 30, 2013 what was your final map? Quote Link to comment Share on other sites More sharing options...
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