A/c problem a/c fan does not come on when I turn on the A/C. I checked fuses. they seem fine

Disconnect the fan motor plug at the fan motor, then see if the fuse goes, if not the fan motor is shorted.

check fuses and coolant temp sensor
the coolant temperature sensor unit ( that is SENSOR not gauge sender unit) sends a report to the ecm to turn on the radiator fan when the temp is reached
If the fan is not coming on then the circuit is broken--sensor, wires ,fuses relay, fan-ecm
all have to be checked out

Could be bad switch since you can sometimes wiggle and make work. Also check ballast resistor to fan motor.

Sounds like the cooling fan is not working. Check the larger fuses in the fuse block under the hood. They should be labeled or diagramed on the inside of the cover. If the fuses look good than swap the fan relay with another relay in the fuse block that looks the same. If the fan starts working and the system that the other relay controls stops working than replace the relay.

If the relay swap does not work than start the car and turn on the A/C. The fan should one on shortly after the compressor engages. If the fan still does not come on than you can check for power and ground to the fan or ohm check the fan itself to see if there is an open circuit. If you have power and ground and the fan is open than the fan will need to be replaced.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Check the electric cooling fan. There will be a sensor on the engine to tell it to turn on. The electric motor itself may be defective, and lastly, there will be a fuse to power the motor. Also, if the engine has been running hot, it may have damaged the thermostat. But from your description, that doesn't seem likely. Hope this helps.

DASH SWITCH SOMETIMES GOES BAD CHECK FOR POWER AT SWITCH AND POWER
GOING OUT OF SWITCH

car over heats at idle when i turn on ac it cools down. checked relay fine,fuse is fine.help!

No if it is stiff to turn,it is bad,replace it,and make sure there is not a blown fuse on top of the cooling fan being bad.

You checked the fuses, that's a good place to start. Usually electric fans are powered up using a relay. It's likely that each fan has it's own individual relay so it's strange that niether fan works. Is the engine overheating? Try turning on the air conditioner after starting the engine. One of the two fans should definitely turn on immediately after switching on the A/C. If so, then the other fan, which would be controled by the temp sensor circuit, might be bad. Before replacing anything you may want to check the temperature sensor is working properly. The relay(s) are probably located in the engine compartment usually near the firewall. Hope this is helpful, if so, please remember to rate my response. Thanks.