Mitsubishi Repair: mitsubishi mirage 98, throttle position sensor, mitsubishi mirage

Question
my car when its cold it surges but its okay when its warm

Answer
Michael,
This can result from a malfunction idle air controller, bad throttle position sensor, dirty throttle body, or clogged EGR or PCV valve.  You may want to have your mechanic inspect those components to see if anything needs servicing.
Good luck!