The 2002 Hyundai is equipt with a IAC (idle air control valve) The ECM extends or retracts IAC to maintain a desired idle. Yes they do become sluggish in there performance, You can try a throttle body cleaning in the throttle plates, this may help relive the idle situation that you are encountering, The IAC motor is on side of throttle body.
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Thursday, February 14th, 2013 AT 8:10 PM