My radiator fan suddenly only comes on high speed, not the
low speed it used to come on.  (I have AC).  I am on my
second temp. sensor switch...the one that screws into the
radiator.  The first one failed after coolant started
leaking through it and this caused the fan to stay on high
at all times.  The second one has worked fine, until
now...or is it something else?
Thanks for any ideas.
steve