Blower Fan doesn't Blow

[mboucher@hotmail.com Boucher]

Just started day one of a vacation road-trip.  An our after leaving today 
the blower fan just stopped.  Tried turning it on and off to no avail.  A 
few hours later it restarted mysteriously.

When it works, the AC works (if I select AC) and i get cool air.  When it 
doesn't...its hot.

I'll try searching the archives, but was hoping someone might have a quick 
suggestion as to what I might look at to try and bring it back to life.  If 
the motor was shot, then would it turn on and off?  Is there a relay for the 
blower motor that might be loose?  If the motor is sticking, is it reachable 
easily to maybe bang it and see if that makes it turn, short of pulling it 
and replacing it?

Charles,
on the road to view whales in Tadoussac, and Hot