a bad relay-a bad temperature sensor.a blown fuse.A bad Ground..a BAD power Source.A COOLING FAN MOTOR THAT IS BURNT UP. a bad ign switch ---A DEAD BATTERY.etc-etc
the thermostat will make both fans become idle if it is not opening. this happened to me on my 95 3.1 lumina
Check the relay.
If cooling fans stop working and engine runs hot wtih A/C on usually excessive head pressure will build in a/c compressor and refrigerant will discharge from system. cooling fans may have a bad fuse or relay should be repaired prior to recharging a/c
Blown fuse, motor burnt up, or the fan relay switch is bad.
A normal puddle on the road should not damage the fan. If the water is deep, then water could get inside of the fan connectors or the fans themselves, and cause failure.
Cooling fans won't stop running in the cold on a grand am gt 2001
If the radiator cooling fans are not working - those are the first things I would check out. It is possible that they may be the heart of your problem, and the remainder of it (the A/C stopped working) might simply be a 'fail-safe' to protect the compressor. Start with the fuse and/or relays controlling the fans to see if they're good or they're blownl, and then the temperature sensors themselves (that are supposed to activate the fans into motion).
Figure out why they stopped working and repair the problem.
Cooling fan not working, or your cooling system needs a complete service. The cooling fan should be on continuously when the A/C is on.
if both fans quit working, it could be as simple as the relay fuse going out. have your mechanic check these fuses.
check radiator cooling fans not working. Will turn on automatically when the proper temp is reached. Fans should go on IMMEDIATELY when the A/C is used. Set temp to 65 to test
Be sure the cooling fans are functioning when the ac is running.