How can I get the engine fan to shut off? It keeps running after the car is off. on 2002 Ford Taurus

Every time I shut the car off, the engine fan continues to run and it's draining the battery.

Asked by for the 2002 Ford Taurus
Try a new relay. About 10.00 @ NAPA. Located in black box under the hood should be labled. Check owners manual as well.