What is causing my radiator fan to constantly run on my 2000 Mercury Villager?
What could be the cause and how do I troubleshoot this?
Things I have already done:
1. Thermostat has been replaced.
2. Engine Coolant Temperature Sensor has been replaced.
3. Three fan related relays have been tested and presumed to be in good working order.
After researching online, one person has found that replacing the ECM under the glovebox has fixed the problem.
Does anyone have any further DIY suggestions? Thank you to anyone who can provide insight!