I’d Pull the heater box, clean and reseal everything. I did mine last year
huge difference in cabin air quality. I added the vanistan ram air control
also and replaced my blower motor and heater core. Having a functioning
blower fan with no hot foot with clean recirculating cabin air makes  a
HUGE difference in overall cabin comfort. It was miserable driving in the
summer wish I fixed the heater box years ago.

On Tue, Jun 29, 2021 at 11:25 PM John Rodgers <jrodgers113@gmail.com> wrote:

> My front heater is putting out some heat all the time, even though
> everything is in the off position. At this point I am interested in just
> cutting off the water to the heater core. Anyone know how to do this? How
> to put in a shut off valve somewhere. Got a link to a how-to video maybe?
>
> Thanks
>