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How hot is the vehicle running? The second cooling fan is programmed to operate only, like the first cooling fan, at a predetermined engine temperature. It varies by model, if I remember correctly however I think it is 226F for the fan to turn on, and at some point if that does not begin working the second fan will turn on.
There is the coolant sensor that tells the computer the temp,and the computer sends a signal to the cooling fan relays,and the relay turns the cooling fans on,and off,if the system is low on coolant,or has air in the cooling system,then the cooling fans would not come on,or the sensor is bad,if this was at all helpful,please rate,thank you.
check fuse and relay.if all is good.hot wire cooling fan using jumper wires to battery.if fan dont run replace the fan.if fan does run you have a open wire or bad connection at cooling fan electrical connector.
sound like you have a bad sencer or relay. you can run a wire from the fan . to a wire that run on when the car start and trun off when you trun the car off.that will get you by for a short time good luck
there is a sensor on the motor behind the throttle at least thats were it is on my 99 grand am se and you can short that plug out and the fans should come on they should come on the with the ignition and go off with it
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