Another common source of hot air seepage is the air distributor box
flaps. There are soft foam-type insulation on these flaps that over
the years disintegrate. One has to take out the dash and the air
distributorb box to successfully repair this type of hot foot
syndrome.

On 8/10/08, Michael Diehr <md03@xochi.com> wrote:
> Re: hot-foot mods to avoid heat seepage through the body on hot days
>
> I've seen described:
>   * extra valve to fully shut off the front heater water
>   * pipe insulation on the coolant pipes under the van
>   * insulating material on the sheet metal downwind from the radiator
> (either inside or outside)
>     or above the automatic transmission
>
> Any advice on which is the best benefit/cost ratio?
>