Miata Mailing List: March 1999, Message #235

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I've got a (strange story to tell you....), no really.  Two times I've
had the same strange behavior happen with my '94 B package.

Following a 10-20 minute highway run at ~90 miles an hour with the heat
on and the radio cranking, the heat blower will mysteriously stop
working and the windshield wipers become inoperable as well.   During
the first instance, I had been using the cruise control and when I came
to a stop the idle was running up and down from normal to about 1,500
RPM.  For both occurances turning the car off and restarting cured the
problem.  I've taken a look in my Haynes manual and can see that the
blower and windshield wiper share  a similar fuse(relay?) block but I
can't figure it past that.

Any ideas on what may be going on?

Thanks in advance.

-Evan