Well, troubleshooting this car I bought, it seemed as though the electric fan wasn't coming on. Once I swapped the connectors I replaced (had the oil press and water temp backwards), I noticed the car would run a tick about halfway going about 55-65 w/ac on. Would get hot quick after I came to a stop.
OK, so I start troubleshooting. Relay clicks on when I turn on the AC, I test the other relays, A-OK.
Next up I jump the relay, but no fan. Unplug fan and test voltage. It's getting 12v so the wiring is ok. I tried to spin the fan over by hand incase it was jammed....nope, it spun freely.
So...with nothing else to loose, I pulled the fan. Took the square plastic plug off the backside of the fan, made sure nothign was broken or cracked in the wiring, and supplied 12V direct....nothing. I did notice when I set the fan down about an ounce of carbon came out of it, so I pryed the back cover off the motor. I'd say there was a full cup of carbon dust in there....don't breath this stuff!. Took it outside, blew it out with compressed air, sprayed it with electric contact cleaner and reassembled.
Fan works
Bad electic fan.....FIXED 
Linear Mode
