Aux Cooling Fans Stay on - 93 W140

[Ralph Burnette]

The auxillary radiator fans on my 300SD
come on after the car warms up and stay
on as long as the car is running. They
shut down as soon as I turn the engine
off.

The tempurature gauge reads a little above
80 and, in one case, last night the
outside tempurature was 58 degrees.

A review of the posting indicate that a
sensor on the engine may be the problem.
If so, where would it be and I can I
check it?

BTW, I have 149k on the car.

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Ralph Burnette
1993 300SD