Hyundai Repair: hondai tiburon 2000, hondai tiburon, throttle position sensor

Question
When I come to a stop the idle fluctuates up and down.  Replaced spark plugs and it still fluctuates a lot.  

Answer
Is your car misfiring?  If so, you should also check the spark plug wires and coil as well.

If not, then you should probably begin by checking the throttle body for excessive carbon, the throttle cable for proper adjustment, the throttle position sensor for proper readings, and the idle actuator for proper operation.  Also check for vacuum leak in the pcv hose.