I have a 92 RS and lately my passenger side window wont roll all the way down or up. When I roll my window down it goes 3/4 way down and then stops. When it rolls up it goes 3/4 way up and stops. If I give it a minute and push the button up or down it will move just a little bit. I have to repeat that a few times to get it all the way up or down. I already bought a new switch. Now im wondering if it is my wiring or my window motor? Let me know.

 

Check the track for dirt and grime. And grease it up a little. See if that works.

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88 White Formula 305 TBI With A New CD Stereo and Abolutly Nothing Else Done To It!

 

Rallyssport sorry to tell you but it sounds like that is what happened to me. Later it won't make it 3/4 it will just move a few inches. Your motor is going bad. Go the the junk yard pull some off another car. Take that to a place that can change them out and Pay through the teeth. Mine cost me 170 total. Which isn't bad. If I were you I would check into doing it myself I did but it is a total PITA