The "rattle" under the hood appears
to be the smog pump having given up the ghost. I purchased a new smog
pump from Discount Auto Parts for $50 and the new belt brought the total to
just over $60 tax and all. I took my Gerber EZ-Out folder and sliced the
old belt. No more rattle under the hood. I'll replace the smog
pump and new belt the first chance I get.