Blown Fuse, Bad relay, bad fan motor.
your fan does not come on unless your car gets hot.if you lift your hood when you start your car the fan will not be running .but when your car gets to hot it will come on.or you may have a short in it.....check out
Your Lumina 2001 engine light might come on while the radiator fan is working because the fan is turning too slowly, is damaged, or is not cooling the engine correctly.
Fuse in fuse block, Fan relay on drivers side strut tower or the fan itself is dead.
I assume your talking about the engine fan, not the cabin fan. The engine fan is designed to come on only when the engine gets hot enough for it. I.E. the fan won't turn on in the dead of winter, or if you just start your car. The fan will turn on whenever the A/C is turned on though, as part of the Air cooling system.
yes, the engine fan need to b running whenever the engine is on the fan is to cool radiater, it only comes on when the engine gets to warm, to cool engine down.
if its a standard engine with a pulley fan then try replacing the fan clutch. its the silver part attached to the fan and the engine. might need to replace the belts as well.
possibly reversed wiring or perhaps a bad PCM, the PCM is supposed to override the sensor and turn on the fan anytime the AC is on.
Some of these fans will not engage until the heat sensor gets to a certain temperature. The engine needs to be hot for the fan to come on.
The blower fan might not come on because the temperature sensor is damaged or malfunctioning. It also might not come on because of an exposed wire or a blown fuse.
It could possibly be the thermostat or the cooling fan. Let the engine warm up and when it gets to 232 to 235 degrees the cooling fan should come on. If not you need to go from there.
That is the fan cooling the liquid in the radiator to keep the engine from over heating.
if it a electric fan it may just be bad now if it runs of the water pump it may be a bad fan clutch. or it could be the thermostat. or fan relay. It could also be the sensor in the computer has gone bad which means you need a new computer.