all of you most likely have failing door switches. I am replacing the switches on my 1995 F150 with the same symptoms. The first warning you get is intermittent functioning, and they seem to quit working when it is pouring rain, a billion below zero, or you are in the drive through at McDonalds. I have considerable experience with electric window lifts starting with cars from the late 1950's. I am here to tell you they sure don't build them like they used to. In the older systems it was wiring that was the trouble area, motor lifts, and switching where pretty much bullet proof, now it is mostly switches. Thankfully the switches are real cheap which I suppose is part of the problem.
Last edited by transmaster; 12-09-2011 at 05:18 PM.