code po 120 on 2001 Hyundai XG300

cars rpm goes to 3000 no throttle response car goes slow maybe 20 mph no power

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2 answers
The problem trouble code is related to the throttle position switch.
Hyundai as a car manufacturer put a lot of free technical information and workshop manuals on line for Hyundai owners. Check out www.hmaservice.com lots of great information.
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