You need to loosen the belts by backing off the tensioners. Since this is difficult to describe I would suggest investing in a manual that has illustrations showing how it's done.
There is one timing belt and three accessory belts.
the alternator will be on the end of the engine that has the drive belts or serpentine belts, alternators are belt driven.
105,000 miles , according to the Gates website ( they make timing belts etc. )
No , according to the Gates website ( they make timing belts etc. ) the 3.0 liter V6 in a 1993 Mercury Villager ( is an interference engine )
Yes , according to the Gates website ( they make timing belts etc. ) the 3.3 liter V6 engine in a 2001 Mercury Villager is an interference engine
Yes , the 3.0 liter V6 engine in a 1997 Mercury Villager is an interference engine ( according to the Gates website , they make timing belts etc . )
Yes , the 3.3 liter V6 engine in a 1999 Mercury Villager is an interference engine ( according to the Gates website , they make timing belts etcetera )
The 1998 Mercury Villager 3.0 liter V6 engine has a timing BELT ( according to the Gates website , they make timing belts etc. )
Yes , according to the Gates website ( they make timing belts etcetera ) the 3.3 liter V6 engine in a 2001 Mercury Villager IS AN INTERFERENCE ENGINE
Yes , the Gates website ( they make timing belts etcetera ) has a timing BELT listed for the 3.3 litre V6 engine in a 1999 Mercury Villager
Those are the drive belts for the alternator, power steering, and air conditioning.
Yes, a competent mechanic can do it without trouble. It is a complex job, but not that difficult.