The distributor shaft bearing can become rusty, and seize causing the engine to stall or not start. The failed distributor will commonly require replacement.
1999 Mercury Villager Problem Reports
Most Reported 1999 Mercury Villager Problem Reports
The fuel injectors can fail and cause drivability problems. Often there is no Check Engine light and the failures can be caused by corrosion of the connector, clogging beyond the point of cleaning, and/or internal failures.
A coolant leak may develop from a plug on the front of the rear cylinder head, behind the timing cover.