dude Posted April 21, 2003 Share Posted April 21, 2003 Has anyone got a pic of the iac in component form showing how it goes together , i can unplug mine with the car running and it makes no difference , want to make sure its in right . John:flame Dev Quote Link to comment Share on other sites More sharing options...
dude Posted April 21, 2003 Author Share Posted April 21, 2003 Ok dudes Scratch that ive just found it on mkiv.com but what exactly does it do and should i be able to unplug it ???? John:flame Dev Quote Link to comment Share on other sites More sharing options...
Steve W Posted April 21, 2003 Share Posted April 21, 2003 Are you talkin' about the Idle Speed Valve / Idle Air Valve ? ?:- Quote Link to comment Share on other sites More sharing options...
Steve W Posted April 21, 2003 Share Posted April 21, 2003 If so, it controls the idle by bleeding air from a pipe fed from the Air-Box / Inlet into the Inlet Manifold..... The Black Circle part is the plunger/solenoid that opens/closes a hole into the Inlet Manifold. Mine got a sliver of plastic stuck in the 'hole' and the idle went to pieces... It wouldn't idle high enough when cold and too high when warm ! I unbolted it and cleaned it out = back to normal again. I could unplug it when it was stuck and it made no difference ! (Haven't tried unplugging it since I fixed it ? I will try tomorrow night ?) FatS. Quote Link to comment Share on other sites More sharing options...
dude Posted April 21, 2003 Author Share Posted April 21, 2003 Yeah steve thats the sucker , i took it off and when i put it back couldnt remember how it went , im pretty sure ive got it right but i will check tommorrow , the cars running like a piece of shit with the uk injectors / pump / reg but leon thought it should still tick over fine i think thats cause its in the closed loop bit of the injector cycle but this thing idles horrible , ive got the s-afc zeroed until leon has had a play with it . John:flame Dev Quote Link to comment Share on other sites More sharing options...
Steve W Posted April 22, 2003 Share Posted April 22, 2003 I think the IDEA (although not sure) is that you could probably shut the Throttle 'flap' COMPLETELY and the car runs TOTALLY on the IAC/IAV. ie. IT controls the idle NOT the throttle. SO, I think Leon's saying it doesn't matter what the... errr... main(?) settings are good/bad etc it should tickover on that idle circuit ? Quote Link to comment Share on other sites More sharing options...
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