cpfcvr6 6 Posted July 21, 2011 Report Share Posted July 21, 2011 hi guys, when my cars engine was at full temperature it used to idle really badly between 300-700RPM, sometimes cutting out.so i bought a brand new idle control valve, when engine is at full temperature it idles beutiful! but now from cold the car idles really bad between 300-700RPM for the first minute or so, sometimes cutting out.so its done the total opposite when i have put a new idle control valve on! weird isnt it but any ideas what the problem is??? cars had new sparks, leads, dizzy, rotor arm and fuel filter. Link to post Share on other sites
Vw_owner 1 Posted July 21, 2011 Report Share Posted July 21, 2011 hi m8, when my car had ideling problems it turned out to be the maf connection plug, the way the cable was routed, water would run down it into the plug, it would idle up and down constantly , so check that and i would clean ya Maf sensor aswell as these can get caked in oil, other then that get ya car hooked up to VAGcom might help. Link to post Share on other sites
cpfcvr6 6 Posted July 21, 2011 Author Report Share Posted July 21, 2011 maf is fine, when i unplug it the car still runs fine??weird how swapping the idle valve and it does the opposite! Link to post Share on other sites
legvw 0 Posted July 21, 2011 Report Share Posted July 21, 2011 You could adjust the idle at cold via an adjusting screw on the throttle body, and when warm, the ecu should sort it out. Worked for me in the past. Link to post Share on other sites
cpfcvr6 6 Posted July 21, 2011 Author Report Share Posted July 21, 2011 You could adjust the idle at cold via an adjusting screw on the throttle body' date=' and when warm, the ecu should sort it out. Worked for me in the past.[/quote']it only does it for a minute or so then idles fine? Link to post Share on other sites
yakuza racer 16 Posted July 22, 2011 Report Share Posted July 22, 2011 i agree on what paul has said... Link to post Share on other sites
cpfcvr6 6 Posted July 22, 2011 Author Report Share Posted July 22, 2011 cool where exactly is this screw located and what direction do i turn it and how many 1/4 turns??i dont want to be messing with the wrong screw :-) Link to post Share on other sites
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