Back window problems in 91 4 runner

[Trout27]

My back window goes up and down if i help it. But it wont go up by itself i was wondering if any one new what the problem would be... thanx

 

[BettyBlue4runner]

I would guess the motor is going bad or the mount is loose or dirty. I would open up the gate and clean/ grease all the joints. Try it again and if it is still having a hard time, look for a new motor in junk yard = ).