Surging idle only at coldstart

D

Devildog

Newbie
Points
11
Location
USA Lemoore CA
Car
2009 Sonata Ltd V6
Greetings all. During initial morning cold start on my 2009 Sonata (V6) the engine RPM will surge up and down for the first several minutes as much as 500-600! After the engine starts to warm up in temperature if performs normally with good idle, acceleration, etc. Any ideas??

Thanks and Semper Fi
 
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