My car overheated and cooling fans not turning on

SOURCE: cooling fans dont operate when engine is on

faulty temperature sensor. It's near where the thermostat lives in the motor. In an emergency you can wire the + side of the fan to the accessory panel, just know that the fan will run the entire time the car is on.

SOURCE: 98 Civic with non-functioning cooling fan

I had the same issue over the summer. I checked the fuse, and needed to replace it. have not had any issues since.

Allan

SOURCE: 1997 honda accord overheating

well you should first hard wire the non working fan to the battery to see if it is ok, then I would check the engine coolant temperature sensor, it is the sensor that tells the computer to turn the radiator fan on

SOURCE: 2002 civic ex overheating

with your description it sounds like your fans are not coming on, also sounds like the problem was never solved, sounds like you threw a lot of money at your problem also... check to see if the fans are coming on at the right times, seems like a n air movement over the radiator since you say it only gets hot in stop and go traffic... well when your driving at a constant highway speed guess what you have air movement through the radiator... check also a clogged ac condensor with bugs, pressure wash it out so the air can pass through it easily... please rate my help thanks

SOURCE: My 2005 Civic overheated for the first time when I

there are two fans one is for radiator and the other is for the a/c condenser. both of them work for their respective system.
hope you did not run the engine long enough to blow the head gasket.
regardless, you need to replace the radiator any way. so that's the first step you need to do and make sure you bleed the air out of the system. no heat is the indication of low coolant or air in the system