you can reset throttle body sensor by
unhooking battery for about an hour or so and then reconnecting it, turning the ignition to the on position but not starting the engine. leave it there for about 15 minutes. then turn it off. should be done after that.
1998 Audi A4 2.8L V6 30v - BBS RC's 17" - Facelift DEPO Chromes - Clear Side Markers - 10" Kenwood Subwoofer, HU, and 4 x Speakers - Diesel 1000 watt amp