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.
Car Problem Reports
Mercury Villager Fuel Injectors May Fail and Cause Drivability Concerns
Mercury Villager Problem
Engines Affected: 3.0L V6, 3.3L V6
Average Mileage: 118,500 mi (70,000 mi - 173,000 mi)
Visitor, 1993 Mercury Villager, 3.0L V6, 160,000 mi
while driving the car feels like its not getting enough gas and it sputters and the more gas it give it the worst it gets.........around town at 35mph it drives fine...highway driving at a higher speed it hesitates a lot. three machamics have looked at it an no one can figure it out
Visitor, 2002 Mercury Villager, 3.3L V6, 70,000 mi
drove fine all morning until traffic problems on interstate. one the van slowed down, we could feel a 'bucking' sensation. shortly after that, the check engine light came on. was near the dealer, so drove it there. the checked it out and reported the #5 injector was misfiring.
Visitor, 1998 Mercury Villager
i change the fuel pump and spark plugs and it still willnt start
Visitor, 2002 Mercury Villager, 3.3L V6, 71,000 mi
had it fixed