I replaced my wiper motor only a few weeks ago. It definately made the 2 settings stronger. ( I went from sluggish to dead in a matter of weeks.)
I bought a rebuilt motor on EBAY for $67. Installation was easy, but I could
not get the pulse washer working yet. ( The wiper motor cover may be bad in my case..) All in all the new motor definately elliminated the slow sluggish pausing wipers of old...
Drquazar