Well, my electric fan is not spinning. This is a major issue. So, I'm curious how you guys evaluate and fix the problem. Where is the temp switch and should I just use a voltmeter to see if it's working properly?

 

Thanks,

What kinda car do you have?

 

My temp sensor is on the RHS of the radiator and has a single yellow? wire attached to it. (82 Hatch)

 

Have you tried jumping power to the fan just to see what happens?:-\

Many folks have just ran a switch to the fan for manuel cooling?

 

Glenn

82 SubaruHummer

01 Forester

Many folks have just ran a switch to the fan for manuel cooling?

 

That's what I did. Don't bother with a supid relay either. Just makes more of a mess with wires; get a good switch and same guage wire as the fan. Youll be set up

I having similar problems with my 89 XT6. I'm out there now (just stopped in for a quick lunch) stumbling through the inoperative radiator fans dilemma with out a thing to go on. The XT6s thermo switch is mounted in the lower RH side tank of the radiator. (Left side, as standing in front of the car.) I have a rad in the shed from a 85 GL, it must have had a 2 pin plug that plugged directly onto that sensor. The XT6 has 2 wires coming out of the sensor and a blue plug connection about 3" from the sensor. I just unplugged this plug, jumpered across the 2 pins in the plug that goes into the wiring harness, turned on the key and both fans immediately start up. I intermittantly have the fans start by themselves, when the engine temp gets up there, but once in awhile is not good enough. I'm going to splice in to those 2 wires and run a new pair back into the cabin for manual switching when I want it. (NEED IT!) I'm picturing that the contacts or bi-metal in the thermo switch are tired. Maybe I'll check into a new thermo switch, but not this week. You might also check the fuses in your fuse box. Must be one for the fan. (Just guessing. I don't have anything to base that assumption on, other than my XT6 which indicates 2 fuses for fans. (I have 2 elect fans on rad, no engine driven fan.) Check that first, if you haven't already. Good luck.

there is a fuse for fan on ea82, also if ac, disconnect one wire from the switch on the small ac line closest to the rad

 

if ea81, the rad must be grounded