Some cars are designed to have the fan run for a few minutes after you
turn the car off. But if doesn't stop until the battery drains, then it
might be a faulty switch or temperature sensor.
Or, if the fan stays running when the engine and radiator are cool you have a
very cheap problem: The fan thermostat is stuck closed. A new
thermostat will fix the problem--the hardest part of replacing it is
finding it. Follow the wires from the fan to the switch--it is usually
on the bottom tank of the radiator. Drain the radiator first and save
the coolant to put back in after you replace the thermostat. NEVER OPEN A
If that wasn't it then check the following:
to see that your coolant level is correct. Top up as necessary.
your hand on the radiator (with the engine off) and feel if it is as
hot at the top as it is at the bottom. If not, your radiator may be
clogged and need flushed or replaced. (Flushing is cheap. Replacing the
- Do you get heat from the heater? Leave it
turned on high and see if your fan stays running the next time. If it
takes care of the problem that could mean you have a kinked radiator
Hope this helped (remember comment and rated this).