What could be the cause of my fans not turning off?

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. My first question is, what testing has been performed? You cannot simply guess at parts to replace; it's important to see what commands are being given, and if the components are following the commands. Then you need to see if the fans operate when commanded by actively turning them on and off using a diagnostic tool. Then you'll need to find out if the fans are not needed - why they are being commanded. I'm sorry you had the problem you did, but I'm wondering for starters if there is an air pocket in the cooling system - which seems to show an overheating boiling over condition but is merely an air pocket that must be purged? Beyond that, damage could have occurred during the previous overheat, so you'll need to check the integrity of all the related components including engine integrity. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.