One problem related to wiper has been reported for the 1998 Lincoln Mark Viii. The most recently reported issues are listed below.
I've had this gem since 2010, bought with 30,000 miles. . . Now has 104,000 miles. It was great until 2014. Where do I start? (1) no heat- broken blender door actuator. . . Manually set it to the warm setting for the winter behind glove box. (2) driver's door handle snapped last year(replaced for $100). . . And now this year the passenger side snapped. (3) doors are constantly "ajar", alternating from one side to the other. (4) ball joint is starting to wear badly, (5) driver's seat won't recline, (6) steering wheel won't move forward/backward anymore, (7) suspension is starting to go. . . Front end lowers to ground after shutting down engine. I'm sure there's more that I can't think of.