If anyone has any information on how to solve this problem that'd be great! The problem happens intermittently. Tried replacing relay switch to no avail. Just hoping to find a solution that works!

It's been in the shop several times,but the problem continues,it has also started stalling out of the blue. The battery has to be disconnected at night to shut the fan off',or any time the car will be unattended or the fan will drain the battery. Anybody have any suggestions?