1990 4runner electric fan problem

commostud

New member
I have a 1990 4runner with 161k on it and it runs fine. I went away for the weekend and low and behold when I got up this morning I went to start it. Nothing, checked all the lights, nothing one. I pulled my other 4runner out of the garage to jump mine. Hooked up the jumper cables and wow, my electric fan came on. I drove it all day at work and the fan did not come on. Tonight when the UPS came, I went outside and the fan was on. I was home for over 2 hours and the fan was on. I pulled the relay fuse but that does not fix the problem. What should I look at to fix the problem? Is there a sensor or temp switch? Thanks for any help.
 
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