It will only go down intermittently and up works all the time. When the window is up and you push the switch up you hear the moan of the motor, but when you push the switch down you hear nothing. Eventually down starts to work again – once or twice, the stops.

I changed the switch – no improvement. I took off the door panel and disconnected the motor switch and put a tester on the power that comes from the door jam. The results were as expected, up had power every time and down had power intermittently.

Last year I did the re-solder fix for the rear windows and I replaced the window regulator on the drivers door because the plastic roller broke. This one has me stumped.

Any suggestions?

Thanks

 

Man this is a tough one, maybe you need to re-solder the front part of the window ECU?
Other than that I've got nothing. Very weird.

 

I would check for a backed out pin, pinched wire, chafed wire, any kind of intermittent open circuit.

 

Intermittent electrical problems are some of the most difficult to resolve.
My only advice would be carefully check local grounds, connector cleanlyness, and previous solder work. A cold solder joint could reak havock. Good luck!

Regards,

Nick

 

Just an update to anyone that may have this problem in the future. Resoldering the board behind the glovebox fixed the problem. Thanks everyone.