Help! My radiator fan wont turn off!

[Ti Kan]

Tyson Varosyan writes:
> I left the car today after my daily drive in the driveway as usual. The car
> is an 87 4kcsq. It is normal for the radiator fan to be on after I leave the
> car. The radiator fan control seems to be independent of the key. However,
> to my surprise, when I went outside about 5 hours later, the fan was still
> buzzing along... I got in the car, the battery was so drained that it needed
> a jump.
> ...

There is a thermoswitch on the radiator itself.  That could have failed.
To check it simply disconnect the wiring to the switch.  If the fan no
longer runs, then you found the culprit.  Otherwise, maybe the radiator fan
relay has failed in the closed position.  Try pulling the relay to test,

-Ti
-- 
Ti Kan
http://www.amb.org/ti
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