Question about 1994 Geo Metro
94 Metros have a 'hidden' fuse in the power lead to the radiator's fan. There's a good chance it's blown. Look under the dashboard near the fusebox, but behind it (toward the firewall) in a completely separate fuse receptacle (not connected to the main fusebox). It should have a whitish color and a small plastic snap-on cap. Under the cap is a standard 30AMP fuse.
If that fuse isn't blown, then it might be the temperature sensor. You can test that by bridging the two wires that go to the sensor; if the fan comes on, the sensor is bad -MAKE ABSOLUTELY SURE YOU HAVE THE RIGHT SENSOR FIRST!!!!
Lastly, if all else fails, it might be the fan solenoid which is a little black box located under the hood near the main fuse block. You'll need a wiring diagram or a little know-how to test it.
Posted on Jul 14, 2009
Since the motor works when straight wired, I suspect your problem is in your temperature sensor. Check for current between the fuse and the sensor, then between the sensor and the fan to make sure the problem is not the wiring somewhere in between. You didn't say if the engine was overheating, but if it isn't, maybe the engine just isn't getting hot enough to turn it on. The normal engine operating temperature should be somewhere around 180 and 210. I don't know where you are, but it is February just about everywhere (except maybe the west coast and parts of eastern and central Europe).
Posted on Feb 25, 2009
There should be 3 wires to the fan one red, one black, and one green or another color, cut both female and male end plugs off, ground the black and run red to battery. do nothing with the other colored wire, it is only for speed control. you must use the same or one size smaller or one size bigger gauge wire or u risk engine fire.
Posted on Feb 25, 2009
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Posted on Jan 02, 2017
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