Power window glitch

1992 BMW 325is

Does anyone have a similar power window problem as the one I have. If so, how is it solved. When I press the passenger window switch the window will move 1 inch at a time, up or down. The driver side window works fine. I hope the power window motor doesn't need replacement ($$$$)

Could be the window regulator...

Make SURE that the PW switches' connectors are SNUGLY connected that may be all the problem and if they are tight be sure there is no corrosion on the terminals...