01 vw passat when you star the car it idl ruof on 2001 Volkswagen Passat

under a minut then runs good but can still fel a mess not all the time car wermd up tune car off and restart car the same thang agen runs for about one minut then runs good. cuod ther be a computer problm? or cam sencor

Asked by for the 2001 Volkswagen Passat
seek diag and est