Bad windshield seal?
Heater core leaking?
A/C evaporator drain plugged?
The 2002 Explorer has several vacuum lines. There are many lines in the engine compartment as well as under the dash.
On a 2002 Ford Explorer XLT : The fuse box is under the dash , on the drivers side
LOOK UNDER THE BUMPER
if it's not under the hood, you should check in the trunk under the carpet, probably in a corner.
2001 is in fuel tank accesable from trunk under carpet
on the passanger side under the carpet sorta up by the kick plate
On the 4 door it's under the dash on the drivers side
Under the instrument panel on the drivers side for the 4 door
Carpet Cleaners - 2002 is rated/received certificates of: Canada:PG
check under the hood. 30 amp fuse.
Under the dash , on the drivers side
Road to the Red Carpet - 2002 TV was released on: USA: February 2002