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
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 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).
if both fans quit working, it could be as simple as the relay fuse going out. have your mechanic check these fuses.
The cooling fans will run when there is a signal calling for them to come on. High temps will do that. Also anytime the ac is on, a fan will run. Try turning the ac off and see if one of the fans stop. Do this when the engine is cold. If the fans run anyway, check your fan relays, they may be stuck on.
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