I have a 1999 Plymouth Neon that the cooling fans stopped working. The fans themselves work.
I had little time to diagnose the problem. I was able to hook the fans directly up to the battery and they worked. The fuse is also ok. For now I hooked the fan up to a toggle switch so I'm able to turn them on manually but I need to get it fixed.
What else is in the cooling fan system? I assume there's a relay somewhere and a couple sensors? Are there common problems that cause this?

 

My neon started overheating and the fans were working, but not when they are supposed to. It turned out to be the Cooling Fan Temperature switch. You can only get it through mopar or off a junked neon though, now mine works fine. Try this...really simple lol Hope this helps sorry i cant give more info, my baby's wakin up lol pm me for more info

 

you mean the Coolant Temp Sensor? its the sensor that sends the signal to the PCM and to the fans.

now then, is your check engine light on?

It sounds most likely that the fan relay is blown. common problem. the relay is below the battery and is screwed onto the frame.

 

No, not the Coolant Temp Sensor. Its tells your guage how hot you're running. Its the Cooling Fan Temperature Switch. That's what my mechanic called it at least, and made it very clear the CTS and the CFTS were most definately NOT the same. You can get a CTS at any Autozone, O'Reilys, or Advance Auto. The CFTS you can only get through Mopar or off of a junked neon. It's located somewhere at the bottom of the engine, whereas the CTS is located in a little space between your Thermostat housing and your Fuel Rail. He also said it was not the relay. Ill try to do a bit more research on it. But unless my mechanic just lied or doesnt know what he's talking about, its called a Cooling Fan Temerature Switch. He only charged me $10 to fix my car so I wouldn't think he lied about it. Sorry for any confusion Lol.