2004 Honda Civic

I have a 95 civic had the same problem.I changed the thermostat, did an oil change, and put a jump wire in the rediator fan switch it stopped mine, and now I have a leak in the water outlet but its the gasket, but it hasnt overheated since!

Jump wire whts that

Should I buy the switch?

You said thaw fan comes on so it's more than likely not the switch. Did u check the thermostat? In my civic I fallowed the bottom radiator hose to the back of the engine, where my thermostat housing is, there is a connector on the thermostat housing I took the connector off and took a wire and put it directly into the connector not the housing itself, the wire causes the fan to come on as soon as the ignition is turned fforward, without the car running it stays on until I turn the car off. Also once u find the thermostat housing and u remove the radiator hose you will see the thermostat. Did u change that? It's only about ten dollars at most places. But basically a jump wire is a wire that acts as a lead to flow the power by bypassing the switch. If u use the jump wire for now it may keep it cool enough to run til u can figure it out, but try not to run it too hot too often cause u could blow the heads then your looking at a 1500 to 2000 fix :-(. If u google how to use a jump wire in place of your radiator fan switch or to test your fan switch, you should find some answers maybe even pictures to help.

Well quick question when changing a water pump do u need to change the thermostat. Because I changed the thermostat before I change the water pump. :Note I put a new fan motor switch on car temp stayed leveled all day yesterday until last night when I parked n left car running

I'm not absolutely sure on that one but if it was still overheating after u changed it it's possible it could of gone bad in the process. I didn't replace the switch, I still have the wire so basically my fan is running the whole time my car is, so I'm assuming that's helping. Is the gauge going to the red zone or do you just smell it when the car overhears? And is the coolant level lower everytime it over heats or does it stay the dame after over heating? Did u look to make sure your hoses are good? And your water outlet gasket? And did u check your oil? Low oil can also make it overheat?