When the cooling fan is not working in Your 2005 Chevy Malibu the first thing that You should inspect is the fuse that goes to the fan. If that fuse has failed then You will need to replace it to get the fan working properly again. If that fuse is okay then the next thing that You will need to check is the wiring at the fan. You will want to make sure that the connection is tight and secure and that the wiring is free from any signs of fraying or damage. If that does not solve it then the next thing that You should check is the fan itself. It is possible that the fan motor has burnt out and You will need to replace it.
Josh
January 4, 2023
I'm having the same issue as well fans won't come on unless I unhook the temperature sensor the temperature sensor is brand new so I'm not sure if it is the wiring to the sensor because when I unplug it and turn the air conditioner on fans come on but when I turn the air conditioner off plug it back up and then turn the air on the fan does not come back on but if it starts getting warmer then all I do is turn the heater on and it keeps it from overheating any ideas thank y'all
Roger D.
April 9, 2020
If the fan motor doesn't work, the air movement through the radiator would not be adequate to dissipate the heat in the coolant. The most common symptom associated with a defective fan engine is an overheated engine. Signs include a warning temperature indicator on the dashboard, steam coming from the engine compartment or from below the car front or slow engine output. If a cooling fan motor is inoperative, a test engine light may come on. A blown fuse may also suggest a problem with the fan motor on the fan circuit.
Francisco
July 27, 2024
I checked the fuses and relays. I moved the fuses and relays around and still no power to the fans. I also replaced the coolant temperature sensor. No luck!!!
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