the coolant is low, or the radiator fan switch is not working
the fan switch is located on the thermostat housing, you can find the thermostat housing by following the lower radiator hose to the back og the block
There are a couple of reasons why a Honda Civic heater fan is not working. The fan motor may of blown or a fuse needs to be replaced.
a fan bypass is done by bypassing the cooling fan switch and running the fan power to a key on circuit which means the fan runs all the time the car is running it will not cycle on and off. its usually wired to an acc fuse in box or done correctly it should be wired with a relay because of the hi amp constant draw
maybe it's wired on the wrong side of the switch
The fan does not have a switch - the thermostat switch runs the fan.
It can be very simple to remove the radiator from a Honda Civic. The first step is to drain the coolant from the radiator. The next step is to disconnect the cooling fan switch and remove the hoses. Then the cooling fan should be removed. Then the radiator should be unbolted and lifted carefully from the vehicle.
No.
you don't, the fan is electric
One of the most common (yet often overlooked) problems in the Honda Civic is the radiator fan switch. Another possibility is the radiator fan relay. Not too commonly, the cooling fan motor itself could be bad. Finally, check the wiring and connections to the radiator fan switch and the fan motor to make sure nothing is loose, corroded, or broken.
Inoperative cooling fan(s) Bad thermostat Bad fan switch sending unit Bad fan relay Blocked radiator cooling tubes (internally)
Defective switch or defective resistor pack. More than likely the latter.