If you are the lien holder on a car can reposs if there is no insurance it?

No, the lack of insurance on a vehicle is generally not grounds for repossession by the lienholder (the lender). Repossession is typically allowed only if the borrower defaults on the loan payments as specified in the loan agreement. While the loan agreement might *require* insurance, the failure to maintain insurance is usually a separate breach of contract that might lead to other consequences (like additional fees or even ultimately, repossession after a payment default), but not repossession on its own.