Trouble code P1120 means: Throttle Position Sensor A Out Of Range Low (Ratch too low)
The height for that 2001 Ford Explorer Sport is 68.2 inches.
The fuse for your 2002 Ford Explorer Sport is similar to that of the 2001 Ford Explorer Sport.
I BELIEVE the GEM is in the center stack of the dash , behind or just to the left of the radio in your 2001 Ford Explorer Sport ( can anyone confirm that ? )
According to the 2001 Ford Explorer Sport Owner Guide : (17.5 U.S. gallons / 66.2 litres )
2001
On a 2001 Ford Explorer Sport Trac , 4.0 ( the engine oil pump is INSIDE the engine oil pan )
# 17 is a 20 amp fuse for the cigarette lighter and Data Link Connector in a 2001 Ford Explorer Sport
For a 2001 Ford Explorer Sport Trac : There are ( 6 spark plugs ) for your 4.0 liter V6 engine
5R55E automatic transmission
For a 2001 Ford Explorer Sport : ( 5.0 U.S. quarts / 4.7 litres of 5W-30 engine oil , with engine oil filter change )
The 2001 Ford Explorer Sport V-6 has a timing belt. Ford engines have not use a timing chain since the 1980s.
A 2001 Ford Explorer Sport , with the 4.0 liter Single Over Head Cam V6 engine should have ( 4 oxygen sensors )