1998 Lincoln Continental. Suddenly, the passenger seat will not move forward or backward. All other positions work – seat back up or down, tilt forward or back, etc, are fine. Is there a home remedy, or do we have to go to the dealer?
There are a couple of things that can cause this.
Switch: These can be taken apart and cleaned with spray contact cleaner.
Motor: There are a series of motors that work the many power seat functions. The “back and forth” motor may be bad. It is replaceable.
Debris in the track: Do a visual check to see if something is jammed in the track preventing the seat from moving.
It’s also a good idea to check fuses, but you stated the other seat functions were working and I assume they’re all on the same fuse. But maybe not so check there too.