<< Hi Paul (and others with a whistling sound from the heater), The
whistling sound coming from the heater in my van started about the same
time that a three-inch strip of black insulating material fell out of the
heater vent...<<snip>>

   This happened to me. (l assume you mean the foot well heat ducts)

    I attempted to replace the insulation using sticky-back closed-cell
foam  which quickly blew right off.  So...I duct taped both openings,
fully expecting to rip the tape off come winter.
That was around four years back and I haven't gotten around to removing
the stuff yet.
Have I mentioned that the bus is not a daily driver and that I live in
Atlanta? <G>

   BTW, I have also removed that &*%! heat exchanger that normally lives
under the rear seat.

        George/ATL
        '89 Westy, Wernher

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