Your idle could simply be set way too low. Check to see if the idle screw is screwed in all the way. It shouldn't be. Go to my site for instructions on how to set the idle.
Alex Ranarivelo South California '91 GTI 16V w/European Motorworks ported 1.8 16V head, Kent 258 cams, Garrett chip, Borla exhaust, passat cat, 3.90 ring and pinion, .80 5th gear, no A/C, neuspeed lowering springs, and rear tri-tie bar. 140hp@the wheels. <A HREF="http://www.iders.com/alexweb/";>Alex's Tuning Information</A>
