98 Sienna rear windows intermitant

The rear power windows operation suddenly became intermitant. Sometimes one will open or close but the other doesn't. sometimes they both work ok. Sometimes neither work at all. Anyone seen this before?

I have the same problem...However my power door doesn't work either! Perhaps in my case it is connected. I'd like to find the solution as well!:rolleyes:

We saw something related when we borrowed Grandma's '98 Sienna a couple years ago, to go see the poppy fields in Lancaster. Somewhere around Lake Hughes we noticed that the passenger side 'vent' (rear) window was without its bolt (that holds the motor crank to the glass). The wind was blowing enough we thought it would break it right off, so tied it to the crank, found a hardware store and bought a carriage bolt and nut, with washers, and put that mess together to avoid an expensive OOPS.

It's still on there, but sometimes the angles are such that the crank has a hard time.

Last week, in the winds (and a bit of rain) here in Altadena, the same passenger vent on our own '99 must have lost its bolt (Torx on the floor, outside part GONE), and while it was parked at The Coffee Gallery, the wind (pretty sure it wasn't a vandal) grabbed the glass and tried to pull it at right angles to the car, at which point it shattered.

I'll be scouring Pick-A-Part for a window, and trying to get it angled right, but those motors have a high-current cutoff that tells them when to stop; if there's no load, it will just turn and turn.

Another vote for manual windows!