Radiator fan 97 Neon

The radiator fan will not come on. Fuse is good. Direct wire the fan
motor to battery, fan works. What is the problem. Please help.

 

Codes?

 

look for melted wiring at the fans cage near the bottom were the relay is
if you have a bad c.t.s then that might prevent the fans from coming on
most fans do not come on untill 225 degreesor more

 

If the fan is good and the fuse is good, the only things left are the sensor
&/or relay (the sensor tells the relay to turn on the fan). The relay can be
tested electrically, but the only way to test the sensor would be to hook it
up to a meter and sit it in water that you bring up to temperature. Easiest
approach is to test the relay -- if it checks out, just go replace the
sensor.

(A friend once had a car with radiator sensors that routinely died. The
first time we changed it, we added a pilot light -- to show if the fan came
on -- and an override switch to turn on the fan manually. That way, if he
saw his engine temp getting too high without the fan pilot light coming on,
he knew the sensor had died and could just hit the switch to keep things
cool.)