Heater core failure.
On a 1997 Ford Explorer : The toe board is the angled piece between the floor and the firewall in front of the driver and the front passenger
Under the carpet in the front passenger floor board.
You have a fuse box under the carpet in the front passenger's front floor board and another fuse box under the hood in front of the passenger's side.
Underneath the passengers seat Actually its on the passenger side but on the front of the floor board. Just peel back the carpet on the front passenger side and you will see it
Between the passenger side front seat and captains chair on the floor board is the release mechanism
It is under the carpet of the front passenger floor board under the glove box. There is a panel back there that you can access and you will see the connector.
in the floor board on the front passenger side. If you were sitting in the front passanger seat it would be right next to your right foot. There is a panel that you have to pull off.
It is at the right front corner of the oil pan (right front meaning passenger side)
it is located and accessible under the dash by the front passenger floor board. need 8mm nut driver only. easy
The floor in front of your seat where you place your feet.
I am not sure, but I would guess it would be near the floor board of the front passenger seating area. It's behind the glove compartment which has to be removed...20- 30 minutes.
under the carpet panel on the passenger side, right in front of the door.